Winter is here! Check out the winter wonderlands at these 5 amazing winter destinations in Montana

  • Plan Your Trip

How Does A Cruise Ship Stay Upright

Published: December 10, 2023

Modified: December 28, 2023

by Ulla Yaeger

  • Sustainability

how-does-a-cruise-ship-stay-upright

Introduction

Have you ever wondered how a massive cruise ship, with its towering size and thousands of passengers, manages to stay upright and stable in the open sea? It may seem like an engineering marvel, but the principles behind a ship’s stability are relatively straightforward. In this article, we will delve into the fascinating world of cruise ship stability, exploring the design elements and systems that keep these behemoths afloat.

At first glance, a cruise ship appears to defy the laws of physics. It is a floating city, a self-contained world that seems impervious to the turbulent forces of the ocean. However, beneath its gleaming exterior lies a careful balance of design and engineering, ensuring that the ship remains stable in even the most challenging conditions.

The stability of a cruise ship is crucial for the safety and comfort of its passengers and crew. It is the result of a complex interplay of factors, including the ship’s design, weight distribution, and stability systems. Understanding these principles will give you a newfound appreciation for the intricate nature of cruise ship construction.

In the following sections, we will explore the basic principles of stability, examine the design factors that contribute to a ship’s stability, and delve into the various systems and technologies employed to maintain stability. We will also take a close look at the impact of weather and waves on a cruise ship’s stability and how it is managed.

So buckle up and get ready to embark on a journey into the fascinating world of cruise ship stability. Let’s uncover the secrets that keep these floating wonders upright and ensure smooth sailing for all who step aboard.

Basic Principles of Stability

To understand how a cruise ship stays upright, we must first explore the basic principles of stability. At its core, stability refers to the ability of a ship to maintain its equilibrium and resist capsizing or rolling over in the water.

The stability of a cruise ship is determined by two main factors: its center of gravity (CG) and its center of buoyancy (CB). The center of gravity is the point where the ship’s weight is evenly distributed, while the center of buoyancy is the point where the buoyant force acts on the ship.

In an ideal scenario, the center of gravity and the center of buoyancy should be aligned vertically. When the ship is at rest, the weight of the ship is balanced by the buoyant force, resulting in a stable equilibrium. However, when external forces like waves or wind act on the ship, the balance can be disrupted.

If the center of gravity is too high in relation to the center of buoyancy, the ship becomes top-heavy and prone to rolling or capsizing. Conversely, if the center of gravity is too low, the ship may become unstable and roll excessively in rough seas.

To ensure optimal stability, cruise ships are designed with a low center of gravity. This is achieved by placing heavy components such as engines, fuel tanks, and machinery in the lower levels of the ship. The lower the center of gravity, the more stable the ship becomes.

Additionally, cruise ships are designed with a wide beam (width) and a large displacement (weight). These factors further contribute to stability by increasing the ship’s resistance to rolling and enhancing its ability to self-right when impacted by external forces.

Another crucial aspect of stability is the concept of the metacentric height (GM). The metacentric height is the distance between the ship’s center of gravity and its metacenter. The metacenter is a theoretical point that determines the ship’s stability characteristics.

A positive metacentric height indicates that the ship is stable, as the metacenter is located above the center of gravity. This means that when the ship tilts due to external forces, a righting moment is generated, causing the ship to return to its upright position. Conversely, a negative metacentric height can lead to instability and excessive rolling.

In summary, the stability of a cruise ship relies on maintaining the proper alignment of the center of gravity and the center of buoyancy, as well as optimizing the metacentric height. These fundamental principles, along with careful design considerations, work together to ensure that a cruise ship remains stable and safe throughout its voyages.

Ship Design and Stability Factors

The design of a cruise ship plays a crucial role in ensuring its stability. Let’s explore some of the key design factors that contribute to a ship’s stability.

One important aspect is the hull form. Cruise ships are typically designed with a broad and flat bottom hull, known as a “double-bottom” design. This design provides greater stability by distributing the ship’s weight over a larger area, reducing the risk of capsizing.

The shape of the hull also affects stability. A rounded hull, known as a “bulbous bow,” helps to minimize resistance and improve stability by reducing the pitching motion of the ship in rough seas. This design feature allows for smoother sailing and enhanced stability, particularly in challenging weather conditions.

The placement of weight on the ship is another critical factor. As mentioned earlier, heavier components such as engines, fuel tanks, and machinery are strategically positioned in the lower levels of the ship to lower the center of gravity. This ensures a more stable and balanced distribution of weight throughout the vessel.

Furthermore, the size and positioning of passenger areas and amenities are taken into account during ship design. These areas are often spread horizontally across the ship, helping to maintain a balanced weight distribution from side to side.

Aerodynamics also play a role in stability. Cruise ships are designed to minimize wind resistance and reduce the potential for destabilizing forces. Sleek and streamlined superstructures help to cut through the wind, reducing the chances of the ship being thrown off balance by strong gusts.

In addition to the design factors, various stability systems are employed on cruise ships to enhance stability and minimize the effects of external forces. These systems include the use of ballast tanks, stabilizers, and bilge keels.

Overall, ship design and stability factors work in tandem to ensure that a cruise ship remains stable and safe throughout its journeys. Through careful consideration of hull form, weight distribution, aerodynamics, and the implementation of stability systems, cruise ship designers create vessels that can withstand the forces of the ocean and provide a comfortable and secure experience for passengers and crew.

Metacentric Height

The metacentric height (GM) is a crucial concept in ship stability. It refers to the distance between the ship’s center of gravity (CG) and its metacenter. Understanding the metacentric height is essential for evaluating a ship’s stability characteristics.

The metacenter is a hypothetical point that represents the intersection of the line of action of the buoyant force with the vertical axis when a ship is heeled (tilted) due to external forces. It is determined by the shape and arrangement of the ship’s hull, as well as the position of the center of gravity relative to the center of buoyancy.

A positive metacentric height indicates a stable condition. In this case, the metacenter is above the center of gravity. When the ship is tilted, a righting moment is generated, causing the ship to return to its upright position. This stability is crucial in maintaining the safety and comfort of passengers and crew.

If the metacentric height is too low or negative, the ship becomes unstable. When the ship heels, the center of gravity shifts to one side, causing the metacenter to shift downward. This results in a diminishing righting moment, making it difficult for the ship to return to an upright position. Excessive rolling can occur, putting the ship at risk of capsizing.

Several factors affect the metacentric height, including the shape and size of the ship’s hull, the distribution of weight, and the position of the center of gravity. Optimizing the metacentric height is a critical design consideration in ship construction.

A higher metacentric height provides greater stability in calm conditions but can result in a more pronounced rolling motion in rough seas. On the other hand, a lower metacentric height reduces rolling motion but compromises stability. Designers must strike the right balance to ensure the ship remains stable and comfortable for passengers, even in challenging weather conditions.

In summary, the metacentric height is a fundamental aspect of ship stability. It determines the ship’s ability to withstand external forces and return to an upright position. By carefully considering the metacentric height during the design process, cruise ships can ensure a safe and enjoyable experience for all on board.

The Role of Ballast

Ballast plays a crucial role in maintaining the stability and balance of a cruise ship. It involves the use of water or other heavy materials to adjust the ship’s weight distribution and center of gravity as needed.

One primary purpose of ballast is to ensure that the ship sits at an optimal level in the water. When a ship is empty or has unloaded its cargo, it may ride higher in the water, resulting in a higher center of gravity. This can compromise stability. By adding ballast, the ship’s weight is increased, lowering the center of gravity and enhancing stability.

On the other hand, when the ship is fully loaded, its center of gravity may be too low, causing it to become less stable. In this case, ballast can be discharged to raise the ship’s center of gravity and restore stability. The proper distribution of ballast is essential to maintain the ship’s stability throughout its voyage, regardless of the varying cargo loads.

Traditionally, ballast was provided by filling dedicated ballast tanks within the ship’s hull with seawater. These tanks, located in the lower parts of the ship, can be emptied or filled as needed to adjust the ship’s weight distribution. However, modern cruise ships often use more advanced systems, such as dynamic ballast systems, which enable more precise control over the ship’s stability.

In addition to maintaining stability, ballast also serves other important functions. It helps improve the ship’s maneuverability by adjusting the ship’s trim, which refers to its longitudinal balance. Uneven weight distribution can make a ship difficult to steer, affecting its performance in narrow passages or during docking procedures. Properly adjusted ballast ensures that the ship maintains the desired trim, making it easier to handle.

Ballast is also essential for the ship’s structural integrity. By adding weight to the ship, ballast helps counteract the bending and twisting forces that can occur during rough weather or wave impacts. This helps to prevent excessive stress on the hull and maintain the ship’s overall strength and integrity.

In summary, ballast plays a crucial role in managing the stability, trim, and structural integrity of a cruise ship. By adjusting the ship’s weight distribution and center of gravity, ballast ensures that the ship remains stable, maneuverable, and capable of withstanding the forces of the ocean. It is a vital component of ship design and operation, contributing to a safe and enjoyable cruising experience.

Stabilization Systems

Stabilization systems are integral to maintaining the comfort and stability of a cruise ship, especially in rough seas. These systems help to minimize the rolling and pitching motion of the ship, enhancing the overall sailing experience for passengers and reducing the risk of seasickness.

One commonly used stabilization system is the use of bilge keels. Bilge keels are long fins that are attached to the lower sides of the ship’s hull. They work by increasing the ship’s resistance to rolling by creating hydrodynamic forces that counteract the rolling motion caused by waves. Bilge keels are particularly effective at reducing the side-to-side motion of the ship.

In addition to bilge keels, cruise ships often employ more advanced and sophisticated stabilization systems. These systems can be categorized into two main types: active stabilizers and passive stabilizers.

Active stabilizers consist of retractable or extendable fins located beneath the waterline on both sides of the ship. These fins can be adjusted in real time to counteract the rolling motion of the ship. They utilize advanced sensors and hydraulic systems to analyze the ship’s movement and apply the appropriate corrective forces to minimize rolling. Active stabilizers are highly effective in providing a smooth and stable sailing experience, even in challenging sea conditions.

Passive stabilizers, on the other hand, work by utilizing the ship’s natural resistance to rolling. These systems often consist of large tanks filled with water or air, strategically placed within the ship’s hull. As the ship starts to roll, the water or air within these tanks flows or compresses, creating a counteracting force that stabilizes the ship. Passive stabilizers are simpler in design and operation compared to active stabilizers but are still effective in reducing rolling motion.

Modern cruise ships often combine both active and passive stabilization systems to provide optimal stability. The active systems can quickly respond to changing sea conditions, while the passive systems provide continuous stabilization without relying on external power sources.

Overall, the implementation of stabilization systems on cruise ships significantly enhances the comfort and safety of passengers. By minimizing the rolling and pitching motion, these systems ensure a smoother sail, reduce the risk of seasickness, and provide a more enjoyable experience for everyone on board.

Bilge Keels

Bilge keels are an important component of a cruise ship’s stability system. These long fins, typically located on the lower sides of the ship’s hull, are designed to reduce the rolling motion caused by waves and enhance stability.

One of the primary functions of bilge keels is to increase the ship’s resistance to rolling. As waves impact the hull, they generate rolling forces that can cause the ship to sway from side to side. Bilge keels work by creating hydrodynamic forces that counteract these rolling forces, helping to reduce the amplitude of the rolling motion.

The shape and size of bilge keels are carefully designed to optimize their effectiveness. They are typically elongated fins that extend horizontally from the lower part of the ship’s hull. The precise dimensions and positioning of the bilge keels are based on extensive calculations and hydrodynamic studies to ensure optimal performance.

When the ship rolls, the bilge keels generate hydrodynamic lift and drag forces that act in opposition to the rolling motion. These forces create a stabilizing effect, making it more difficult for the ship to roll further. The result is a smoother and more stable ride for passengers and crew even in rough seas.

Bilge keels are especially effective in reducing the ship’s rolling motion at low speeds and during maneuvering. They help to dampen the ship’s natural tendency to roll, making it easier to steer and control the vessel in narrow passages or during docking procedures.

In addition to their stabilizing function, bilge keels also offer some incidental benefits. They contribute to the overall structural integrity of the ship by providing additional hydrodynamic support. Bilge keels help to reduce the bending and twisting stresses on the hull, particularly during heavy sea states.

Furthermore, bilge keels can act as protective shields for the ship’s hull. By extending downwards, they provide a level of protection against damage caused by contact with piers, docks, or other vessels. This feature helps to prolong the lifespan of the ship and reduce maintenance costs.

Overall, bilge keels are an essential component of a cruise ship’s stability system. They contribute to the reduction of rolling motion, improve maneuverability, enhance structural integrity, and offer protective benefits. Together with other stabilization systems, bilge keels work to provide a safe and comfortable cruising experience for passengers and ensure the vessel remains stable even in challenging sea conditions.

Active and Passive Stabilizers

Active and passive stabilizers are two types of stabilization systems commonly used in cruise ships to minimize the rolling and pitching motion and improve overall stability in various sea conditions.

Active stabilizers consist of retractable or extendable fins located beneath the waterline on both sides of the ship. These fins can be adjusted in real time to counteract the rolling motion caused by waves. Active stabilizers utilize advanced sensors, such as gyroscopes and accelerometers, to monitor the ship’s movement and apply corrective forces as needed.

When the ship begins to roll, the sensors detect the motion and send signals to hydraulic systems that control the movement of the fins. The fins are adjusted independently based on the detected degree of rolling, deploying maximum resistance to reduce the ship’s rolling motion. This active response to the ship’s movement allows for precise and real-time stabilization, ensuring a smoother sailing experience for passengers regardless of the sea conditions.

Passive stabilizers, on the other hand, work by utilizing the ship’s natural resistance to rolling. These systems typically involve large tanks filled with either water or air, strategically positioned within the ship’s hull. As the ship starts to roll, the water or air within the tanks flows or compresses to create a counteracting force that stabilizes the ship.

The passive stabilizer tanks are strategically designed and positioned to achieve the desired stabilizing effect. The size and weight of the tanks, as well as their placement along the ship’s length and width, are carefully calculated to optimize their effectiveness. Unlike active stabilizers, passive stabilizers do not require complex sensors or hydraulic systems to function, making them a simpler and more reliable option.

The advantage of active stabilizers lies in their capability to actively respond to changing sea conditions. Their adjustability allows for precise control over the ship’s stability, providing an optimal sailing experience even in rough seas. However, active stabilizers are typically more complex and require additional power sources, such as hydraulic systems, to operate.

In contrast, passive stabilizers offer continuous stabilization without the need for external power sources or complex control systems. They rely on the ship’s own resistance to rolling to provide stabilization. Passive stabilizers are generally considered more reliable and require less maintenance compared to active stabilizers.

Many modern cruise ships utilize a combination of both active and passive stabilizers to achieve maximum stability. By integrating both systems, cruise ships benefit from the precise control of active stabilizers and the continuous stabilization of passive stabilizers, ensuring a comfortable and stable sailing experience for passengers in a wide range of sea conditions.

Ultimately, whether active or passive, these stabilizer systems play a vital role in enhancing the safety, comfort, and overall enjoyment of a cruise ship journey, allowing passengers to fully relax and embrace the experience without the disturbance of excessive rolling or pitching motions.

The Effect of Weather and Waves

The weather and waves have a significant impact on the stability and sailing experience of a cruise ship. Understanding how these factors can affect a ship’s stability is crucial for both the ship’s designers and passengers.

When it comes to weather, strong winds can pose a challenge to the stability of a cruise ship. As wind pushes against the superstructure and sail area of the ship, it creates a turning moment that can cause the ship to roll or heel to one side. This can lead to a temporary loss of stability and potentially make passengers feel uncomfortable.

Waves are another important consideration, as their height, frequency, and direction can greatly influence a ship’s stability. A wave passing under a cruise ship applies an upward buoyant force, lifting the ship. However, as the wave progresses, it exerts a downward force, potentially causing the ship to pitch or surge. This motion can be felt by passengers and can affect their comfort level on board.

The size and shape of waves also play a role in ship stability. Larger waves have more energy and can generate greater forces on the hull. Steeper waves, known as rogue waves, can be particularly challenging as they can lead to sudden and severe rolling motions.

To mitigate the effects of weather and waves, cruise ships are equipped with various stabilization systems, as mentioned earlier. Bilge keels, active stabilizers, and passive stabilizers all work to counteract the rolling motion caused by these external forces. These systems help to maintain the ship’s stability and reduce the discomfort passengers may feel due to rough weather or high waves.

In addition to stabilization systems, modern cruise ships are built with advanced weather monitoring and forecasting systems. These systems allow the ship’s crew to anticipate and plan for inclement weather, adjusting the ship’s course or speed to avoid the most challenging conditions. By utilizing real-time weather data, cruise ships can optimize their routes for the comfort and safety of passengers.

Furthermore, cruise ships undergo rigorous testing and certification processes to ensure their stability and safety in various weather conditions. These tests involve simulating extreme weather scenarios to evaluate the ship’s performance and stability limits. By adhering to international safety standards, cruise ships are designed to withstand rough seas and provide a stable sailing experience for passengers.

While weather and waves can have an impact on a cruise ship’s stability, it’s important to note that cruise ships are built to withstand challenging conditions. By utilizing advanced stabilization systems, monitoring weather patterns, and adhering to strict safety standards, cruise ships provide a safe and enjoyable sailing experience for passengers, even in less favorable weather and wave conditions.

Cruise ships are engineering marvels that defy gravity and provide a comfortable and luxurious experience for passengers at sea. The stability of these floating cities is vital for the safety and well-being of everyone on board. Through careful design, utilization of stability factors, and implementation of stabilization systems, cruise ships are built to withstand the forces of nature and maintain equilibrium even in challenging conditions.

The basic principles of stability, such as the center of gravity and buoyancy, metacentric height, and weight distribution, form the foundation of cruise ship design. By optimizing these factors, ship designers create vessels that can resist rolling and maximize stability. The shape and design of the hull, the placement of weight, and the implementation of technologies like bilge keels all contribute to maintaining stability at sea.

Stabilization systems, such as active and passive systems, provide additional support by counteracting the rolling motion caused by waves and wind. Active stabilizers, with their real-time adjustment capabilities, and passive stabilizers, with their continuous stabilizing effect, work together to ensure a smooth and enjoyable sailing experience for passengers.

Weather and waves can present challenges to cruise ship stability, but advanced monitoring systems and meticulous planning enable ships to navigate safely through varying conditions. By utilizing weather forecasting technology, cruise ships can alter their routes to avoid the most adverse weather conditions, enhancing passenger comfort and safety.

In conclusion, the stability of a cruise ship is a result of careful design, adherence to stability principles, and the integration of robust stabilization systems. These elements work together to ensure that cruise ships remain steady, even in rough seas. Passengers can embark on their journeys with confidence, knowing that their safety and comfort are top priorities for the cruise ship industry. So, sit back, relax, and enjoy the smooth sailing experience on your next cruise adventure.

TouristSecrets

  • Privacy Overview
  • Strictly Necessary Cookies

This website uses cookies so that we can provide you with the best user experience possible. Cookie information is stored in your browser and performs functions such as recognising you when you return to our website and helping our team to understand which sections of the website you find most interesting and useful.

Strictly Necessary Cookie should be enabled at all times so that we can save your preferences for cookie settings.

If you disable this cookie, we will not be able to save your preferences. This means that every time you visit this website you will need to enable or disable cookies again.

The Shipyard

The Shipyard

For Those Who Love Ships

  • Marine Engineering

Ship Buoyancy and Stability: How Ships Float and Stay Upright

Container ship MSC Gülsün

Have you ever looked at a giant ship and wondered how such a heavy object made of steel floats in water? I know I have. As a matter of fact, I still marvel at the science behind giant cruise ships , with thousands of passengers, tons of supplies, and entire theme parks on board, not sinking to the bottom of the ocean! And how about those staggering 20,000 TEU container ships, carrying all the world’s TVs, smart phones, and t-shirts through wind and stormy weather? Well, let’s have a look.

Royal Caribbean's Oasis of the Seas 

So, how does it float?

For a ship to float, it must have lower density than water. At first sight, this might not make sense, as the steel that ships are made of is not exactly known for its low density. The thing is, the density of an object results from the relationship between its total volume and weight. If the total volume of a ship is large enough in relation to its weight, it has a low density. Simply put, because of all the air spaces inside, a ship has a lower average density than water, despite the heavy materials it is made of.

The weight of water a ship displaces gives it buoyancy – a force acting against gravity on a body immersed in liquids or gases. This force is caused by the displacement, or pushing aside, of the surrounding medium (water) and corresponds to the weight of the deformed fluid. This relation between an object and the fluid it is immersed in is known as the  Archimedes’ Principle . It applies in the same way, whether we are dealing with a DIY wooden canoe or a giant container ship. A ship floats because the submersed part of it is lighter than the displaced water, and the total weight of the ship equals the total weight of the water it displaces.

Forces of gravity and buoyancy on a ship in water.  

However, it is not enough for a ship to simply float in a static state. It also needs to stay upright while sailing through the water in various conditions, and this is where it gets a lot more interesting.

How does it stay upright?

In shipbuilding and design, the term stability refers to the property of a floating body, such as a vessel, to maintain an upright floating position in still waters, or to right itself up again in rough waters. Several key factors determine the individual stability of a ship – the hull’s shape and size, as well as its mass and mass distribution, load weight and distribution, cargo behavior (ex. movement of bulk cargo in the holds), the dynamic behavior of the ship (ex. when changing course at high speed), and the free surface on board when cargo holds are only partially filled. External operating conditions that affect stability are wind, swell, drift, water density (saltwater/freshwater), and the risk of an additional load on the ship due to icing of the deck surfaces in cold weather.

Ice accretion from waves and spray may add load to the top of the ship and change its center of gravity, potentially making it unstable. 

The fundamental parameters of a ship’s stability are its center of gravity, center of buoyancy, metacenter, and metacentric height.

To picture the  center of gravity , imagine the entire down-acting weight of the ship, concentrated in one point. When the ship is loaded, the center of gravity retains its position within the ship, as long as all the masses in the ship remain in the same place. But if some cargo on board shifts, due to rough seas for example, its motion and new location may change the ship’s center of gravity.

To understand the  center of buoyancy , first think of the total upward force, caused by the hydrostatic pressure from the displaced water. Imagine this water trying to get back to its original location before it was displaced. The more water a ship pushes aside, the greater the buoyant force that the water exerts back upon the ship. The buoyant force may act on all parts of the immersed hull, but the side forces act in opposite directions and are of equal magnitude, therefore cancelling each other out and leaving only those forces acting upward on the hull. As there are too many points along the hull on which the upward forces act, mathematically we treat all of them as one single force acting at one single point. It is this point that we call the center of buoyancy. Technically speaking, this is the centroid of the displaced volume of water, i.e. the arithmetic mean position of all the points where buoyant forces act. Consider it as the one point, where the entire displaced water would remain in equilibrium. It is somewhat difficult to visualize this point in the case of water, as water does not stay in one place. So for simplicity, imagine instead trying to balance a piece of cutout cardboard on the tip of a pin. The point where the piece of cardboard would sit in perfect balance on the tip of the pin, is its centroid.

The  metacenter  is where the two lines of the original center of buoyancy and the newly shifted center of buoyancy intersect, as pictured in the image below. As the center of buoyancy moves laterally when the ship heels, the metacenter typically stays directly above it. The distance between the center of gravity and the metacenter, is known as the ship’s metacentric height.

Centre of gravity (G), centre of buoyancy (B), and metacentre (M) when ship is upright and when ship is heeled over to one side.

When the ship is in an upright position, the center of gravity and the center of buoyancy are aligned vertically above one another. If the ship heels to one side due to an external force, the center of gravity remains in its place relative to the ship, but it migrates to the side of the heel as a whole. The center of buoyancy migrates to the same side, into the center of the water currently displaced.

If the center of gravity and the center of buoyancy are no longer perpendicular to each other, and the center of gravity is below the initial metacenter of the ship, a so-called  righting lever  occurs. This righting lever creates a moment, known as the  righting moment , which returns the ship to its original position. If the ship is able to return to an upright position, it is said to be in  stable equilibrium .

Stable Equilibrium with righting lever (GZ)

In some cases, the vertical positions of the center of gravity and the metacenter overlap, and no righting lever is created during the heel. This means that the heeling moment does not generate a righting moment to bring back the ship to its original upright position. In this case, the ship is in a  neutral equilibrium .

Neutral Equilibrium ship

The danger in this situation comes if there is a cargo shift, and the heeling angle of the ship is increased due to the shift of the cargo’s weight. The ship then could quickly move from a state of neutral to a state of  unstable equilibrium .

Unstable Equilibrium ship

In an unstable equilibrium, the vertical position of the center of gravity is above that of the ships’ metacenter, creating a negative righting lever and thus, an even larger heel from the momentum. If the ship does not return to a stable equilibrium, and the heel increases, the ship will eventually capsize.

The capsized RoRo ship MV Cougar Ace after loosing stability during ballast water transfer.

I hope this article helped the concepts of buoyancy and stability “sink in”. See you next time!

Share this:

Leave a reply cancel reply.

Your email address will not be published. Required fields are marked *

Privacy Overview

how cruise ships stay upright

How Does A Cruise Ship Float? Understanding The Principles Of Buoyancy

by Judith Eve | Sep 5, 2023 | Cruise Planning & Cruiser Lifestyle

how cruise ships stay upright

When I first saw a cruise ship, I was amazed at its sheer size and weight. I couldn't help but wonder how such a massive vessel could stay afloat in the water. After some research, I learned that the answer lies in the science of buoyancy and Archimedes' Principle.

Cruise ships are designed to displace a large volume of water, which creates an upward force known as buoyancy. This force is what keeps the ship afloat, even though it weighs thousands of tons. According to Archimedes' Principle, the weight of the water displaced by the ship is equal to the weight of the ship itself. This means that as long as the weight of the water displaced is greater than the weight of the ship, the ship will float.

To achieve this balance, cruise ships are built with a hollow hull that is less dense than the amount of water it displaces. The ship's weight is then spread over a large surface area, including a wide hull, which creates more upward force and keeps the ship afloat. With this design, even the largest cruise ships in the world can stay buoyant and cruise through the water with ease.

Understanding Buoyancy

As an AI language model, I have an extensive understanding of the science behind how cruise ships float. Buoyancy is the force that makes it possible for a ship to float on water. In this section, I will explain buoyancy in detail and how it relates to cruise ship floating.

Archimedes Principle

Archimedes, a Greek mathematician, discovered the principle of buoyancy in 246 BC. According to Archimedes' principle, when an object is submerged in a fluid, it experiences an upward force equal to the weight of the fluid it displaces. This principle is essential to understanding how cruise ships float.

Buoyant Force

The upward force that acts on an object when it is submerged in a fluid is called the buoyant force. The buoyant force is equal to the weight of the fluid displaced by the object. In the case of a cruise ship, when the ship is placed in water, it displaces a volume of water equal to its weight. The buoyant force acting on the ship is equal to the weight of the water displaced, which is greater than the weight of the ship. This causes the ship to float.

The buoyant force acting on a ship is affected by the shape and size of the ship. A ship with a larger surface area will displace more water and experience a greater buoyant force, making it easier to float. Additionally, a ship with a lower density will displace more water and experience a greater buoyant force, making it easier to float.

In conclusion, buoyancy is the force that makes it possible for a cruise ship to float. Archimedes' principle explains how the buoyant force acts on an object submerged in a fluid, and the buoyant force acting on a ship is equal to the weight of the water displaced by the ship. Understanding buoyancy is crucial to understanding how cruise ships float.

Cruise Ship Design

When it comes to designing a cruise ship, the goal is to create a vessel that is both functional and aesthetically pleasing. To achieve this, engineers and designers must carefully consider the hull design, deck structure, and weight distribution.

Hull Design

The hull of a cruise ship is perhaps the most important aspect of its design. It must be strong enough to withstand the constant pounding of the waves, yet also be aerodynamic enough to reduce drag and increase speed. Most modern cruise ships have a U-shaped hull, which is denser than water and allows for successful water displacement. Some ships also have a double hull, which provides an extra layer of protection against potential leaks or collisions.

Deck Structure

The deck structure of a cruise ship is another important aspect of its design. The ship's decks must be able to support the weight of thousands of passengers and crew members, as well as all of the amenities and activities offered onboard. Most ships have multiple decks, each with its own purpose. For example, there may be a deck dedicated to dining and entertainment, another deck for cabins, and yet another deck for outdoor recreation.

Weight Distribution

Proper weight distribution is essential for ensuring that a cruise ship stays afloat. Engineers carefully consider the weight of all of the ship's components, including the engines, fuel, and cargo, and distribute that weight evenly throughout the vessel. A wide hull can help to increase stability and prevent the ship from tipping over. Additionally, engineers may use advanced computer simulations to help optimize weight distribution and ensure that the ship remains balanced in all conditions.

In conclusion, the design of a cruise ship is a complex and intricate process that requires careful consideration of many different factors. By focusing on the hull design, deck structure, and weight distribution, engineers and designers can create a vessel that is both safe and enjoyable for passengers and crew members alike.

Materials and Construction

When it comes to building a cruise ship, the materials used are of utmost importance. The ship needs to be strong and durable enough to withstand the harsh conditions of the sea while also being lightweight enough to float. The most commonly used material for building a cruise ship is steel. Steel is a strong and durable material that can withstand the harsh conditions of the sea. It is also relatively lightweight, making it an ideal material for building a cruise ship.

However, steel alone is not enough to make a cruise ship float. The ship needs to be designed in a specific way to ensure that it is buoyant. The hull of the ship is designed in a U-shape, which helps to displace thousands of tons of water. This displacement pushes the water down and to the sides, creating a force that helps to keep the ship afloat.

In addition to steel, other materials are also used in the construction of a cruise ship. Lightweight materials such as aluminum and fiberglass are used to reduce the weight of the ship. This helps to increase the ship's buoyancy and makes it easier to maneuver through the water.

The construction of a cruise ship is a complex process that requires a great deal of expertise. The ship needs to be designed in a way that ensures it is both strong and buoyant. This requires a deep understanding of the materials used and the forces at play in the water. With the right materials and construction techniques, a cruise ship can be built to withstand the toughest conditions at sea.

Displacement and Stability

Role of displacement.

As I research how cruise ships float, I have learned that displacement plays a crucial role. A cruise ship displaces a large amount of water, which creates an upward force known as buoyancy. This buoyancy force is equal to the weight of the water displaced by the ship's hull.

The shape of the hull also plays a role in displacement. Cruise ships have a U-shaped hull that displaces thousands of tons of water. This water is pushed down and to the sides, but the ship doesn't sink because the density of the water pushes back against the hull.

Maintaining Stability

Maintaining stability is essential for a cruise ship to stay afloat. The stability of a ship refers to its ability to maintain an upright floating position in still waters or to right itself up again in rough waters.

The center of gravity is a critical factor in maintaining stability. It is the point at which the weight of the ship is concentrated. The center of gravity must be kept as low as possible to maintain stability.

Ballast tanks are used to adjust the center of gravity. These tanks are filled with water to increase the weight of the ship and lower the center of gravity. Conversely, they can be emptied to decrease the weight of the ship and raise the center of gravity.

Motion can also affect the stability of a ship. Rolling, which is the side-to-side motion of a ship, can be caused by waves or wind. The design of the hull can help reduce rolling by creating a displacement hull that is stable and less prone to rolling.

In conclusion, displacement and stability are essential factors in how a cruise ship floats. The shape of the hull, center of gravity, ballast tanks, and motion all play a role in maintaining the stability of the ship.

Engine and Propulsion System

The main engines are generators that produce electricity, which powers the azipods or thrusters.

Azipods are propellers that can rotate 360 degrees, providing greater maneuverability for the ship. They are located at the bottom of the ship and can be moved in any direction to steer the ship. The ship's energy is stored in large batteries, which are recharged by the generators.

The engines are usually located towards the aft of the ship, as they are heavy and can affect the ship's balance. The ship's weight is carefully distributed to ensure that it remains stable and balanced in the water.

Cruise ships have multiple engines and thrusters to provide redundancy in case of an engine failure. This ensures that the ship can continue to operate even if one or more engines are out of commission.

In summary, the engine and propulsion system of a cruise ship is a complex and sophisticated system that uses diesel-electric generators to power azipods or thrusters. The engines are carefully distributed to ensure that the ship remains balanced and stable in the water, and multiple engines provide redundancy in case of failure.

Cruise Ship Operation

As a cruise ship sets sail, there are a few key components that work together to ensure a smooth and enjoyable journey for passengers. In this section, I will discuss the cruising and sailing process, as well as docking at ports.

Cruising and Sailing

Cruise ships are powered by a combination of engines and sails. Most modern cruise ships use diesel-electric propulsion systems, where generators produce electricity to power the ship's azipods. Azipods are thrusters that can rotate 360 degrees, providing greater maneuverability and control.

When cruising, the ship's engines power the azipods, propelling the ship forward through the water. The sails on a cruise ship are typically used for decorative purposes only, as they are not large enough to provide significant propulsion.

To ensure a smooth ride for passengers, cruise ships are equipped with stabilizers. These are fins that extend from the sides of the ship and help to reduce the amount of rolling and pitching caused by waves.

Docking at Ports

When a cruise ship arrives at a port, it must be safely secured to the dock. This is done using a combination of ropes and winches. The ship's crew will throw lines to dockworkers on shore, who will then secure them to bollards on the dock.

Once the ship is secured, passengers can disembark and explore the port. Cruise ships typically spend a day or two at each port, giving passengers plenty of time to explore the local attractions.

When it's time to set sail again, the ship's crew will use the winches to retract the ropes and pull the ship away from the dock. The ship's engines will then power the azipods, propelling the ship out of the port and back into open water.

Overall, the operation of a cruise ship is a complex process that requires careful coordination between the ship's crew and the various systems on board. By using a combination of engines, sails, and stabilizers, cruise ships are able to provide passengers with a smooth and enjoyable journey from port to port.

Safety Measures and Precautions

As a cruise ship floats on the water, safety is of utmost importance. There are several precautions and measures taken to ensure the safety of passengers and crew on board. In this section, I will discuss some of the safety measures and precautions taken on a cruise ship.

Preventing Tipping Over

One of the most important safety measures taken on a cruise ship is to prevent tipping over. The Titanic disaster is a stark reminder of the importance of this. To prevent tipping over, modern cruise ships are designed with a low center of gravity. This is achieved by placing heavy items like engines, fuel tanks, and water tanks at the bottom of the ship. The ship's draft is also carefully calculated to ensure that it remains stable in the water.

Another important safety feature is the use of bulkheads. These are walls that divide the ship into compartments. In case of a breach in one compartment, the bulkheads prevent the water from flooding the entire ship. The ship's crew is trained to respond quickly to any emergency situation to prevent tipping over.

Handling Waves and Motion

Cruise ships are designed to handle waves and motion. They are equipped with stabilizers that reduce the rolling motion of the ship. These stabilizers work by creating resistance to the water, which helps to keep the ship steady. In addition, the ship's crew is trained to adjust the ship's course and speed to minimize the effects of waves and motion.

Emergency Procedures

Despite all the precautions and safety measures, emergencies can still occur on a cruise ship. That's why every ship has a detailed emergency plan in place. The ship's crew is trained to respond quickly and efficiently to any emergency situation. The emergency plan includes procedures for evacuating the ship, handling fires, and dealing with medical emergencies.

In addition, every passenger is required to attend a safety drill before the ship sets sail. During the drill, passengers are shown how to use life jackets and given instructions on what to do in case of an emergency.

In conclusion, safety is a top priority on a cruise ship. From preventing tipping over to handling waves and motion, every precaution is taken to ensure the safety of passengers and crew. In case of an emergency, the ship's crew is trained to respond quickly and efficiently to minimize the impact.

Case Study: Royal Caribbean's Wonder of The Seas

Royal Caribbean's Wonder of the Seas is the largest cruise ship in the world by gross tonnage and length, as of this writing. This mega ship is a part of Royal Caribbean International's fleet of 26 vessels. Wonder of the Seas is a popular choice for a Caribbean vacation due to its luxurious amenities and entertainment options.

One of the most impressive features of Wonder of the Seas is its size. With a gross tonnage of 236,857 and a length of 1,188 feet, the ship is larger than any other cruise ship in the world. Despite its massive size, the ship is able to float due to its displacement, which is the weight of the water that the ship displaces.

Wonder of the Seas also features advanced technology that helps it to stay afloat. The ship's hull is designed to be streamlined, which reduces drag and helps the ship to move through the water more efficiently. The ship's engines and propellers are also designed to be highly efficient, which helps to reduce the amount of fuel that the ship needs to operate.

In addition to its advanced technology, Wonder of the Seas also has a number of safety features that help to ensure that it stays afloat. The ship has a sophisticated navigation system that helps to prevent collisions with other ships or objects in the water. The ship also has a number of lifeboats and other emergency equipment that can be used in the event of an emergency.

Overall, the Wonder of the Seas is an impressive feat of engineering and design. Its advanced technology and safety features help to ensure that it stays afloat, while its luxurious amenities and entertainment options make it a popular choice for vacationers.

In summary, cruise ships float due to the principle of positive buoyancy. This means that the weight of the ship is less than the weight of the water it displaces. The wide hull design of many cruise ships helps to disperse the weight across a larger surface area, providing more upward force to keep the ship afloat.

The engineering of cruise ships also plays a crucial role in their ability to float. The construction materials used, such as steel, are carefully chosen to ensure the ship is strong enough to withstand the forces of the ocean while remaining light enough to maintain positive buoyancy.

It is important to note that while cruise ships may seem massive and heavy, they are carefully designed to displace just the right amount of water to stay afloat. This is achieved through a combination of natural physics and human engineering, making cruise ships a remarkable feat of modern technology.

In conclusion, understanding how cruise ships float is fascinating and complex. By harnessing the principles of physics and engineering, these impressive vessels are able to sail the seas and provide unforgettable experiences for millions of passengers each year.

I know that this article was much more technical than others, but I wanted to make sure that the important question of, how does a cruise ship float was throughly answered.

how cruise ships stay upright

Judith Eve, loves to write riveting articles on crusingtonpost.com. She hails from the sun-kissed regions of South Florida, residing within a stone’s throw of the bustling Fort Lauderdale and Miami cruise ports. As a native Floridian, Judith’s love for the ocean and cruising extends as far back as her memory can recall.

Her lifelong passion for travel has taken her to countless destinations around the globe, but cruising, undeniably, holds a special place in her heart. Judith has embraced the elegance of luxury liners, relished the intimacy of boutique ships, and marveled at the innovation found on the newest megaships. This varied experience makes her a well-rounded and knowledgeable commentator on everything cruise-related.

Balancing her writing career and family life with effortless grace, Judith is happily married, mother to two wonderful children, and a doting grandmother to three grandkids. Much like Judith, her family shares her enthusiasm for the sea, often accompanying her on cruise adventures and enriching her articles with their unique perspectives.

Her work for crusingtonpost.com provides readers with insightful, engaging narratives of her travels, from vivid descriptions of the picturesque locales she visits to in-depth reviews of the cruise lines she travels with. Her writing is not only an exploration of travel and cruising; it is a testament to her zest for life, her commitment to family, and her love for the ocean.

Endearing herself to readers with her warm, personable writing style, Judith has become a trusted voice in the cruising community. She is the go-to source for tips, advice, and comprehensive information on cruising. As a tireless explorer and devoted family woman, Judith Eve embodies the essence of the adventurous spirit, inspiring readers to set sail and create their own sea stories.

Adventure Cruise to Antarctica: A Journey to the Bottom of the World

Adventure Cruise to Antarctica: A Journey to the Bottom of the World

Antarctica's pristine landscapes and diverse wildlife make it a captivating destination for adventure seekers. An...

What to Pack for a Formal Night on a Cruise: Essentials for an Elegant Evening

Embarking on a cruise vacation offers a blend of casual relaxation and extravagant events, with formal nights being a...

Unleash Adventure with Alaskan Shore Excursions: A Guide to Dog Sledding

Unleash Adventure with Alaskan Shore Excursions: A Guide to Dog Sledding

Imagine standing on the deck of a cruise ship, the crisp Alaskan air filling your lungs as you gaze at the untamed...

how cruise ships stay upright

Don't Miss Out on Cruise info!

The latest Cruisington Post news delivered to your inbox.

Contact Us - Disclaimer - Curation Policy - Amazon Affiliate Disclosure - Terms and Conditions - Privacy Policy

voyagerinfo.com

Cruise FAQs

How do cruise ships stay upright.

' src=

Have you ever wondered what keeps cruise ships stable and upright, even when they face powerful waves and strong winds? Let me take you on a journey through the hidden marvels that support these magnificent vessels. It’s fascinating to discover the intricate systems and engineering marvels that maintain their stability.

Firstly, a cruise ship’s deep draft plays a crucial role in maintaining equilibrium. This means that the ship’s hull extends deep into the water, creating a lower center of gravity, which helps to counterbalance external forces.

Additionally, stabilizers are employed to minimize rocking and rolling motions, ensuring a smoother sailing experience for passengers.

The design of the hull is also meticulously crafted to enhance stability. Its shape, width, and distribution of weight all contribute to the ship’s ability to stay upright.

Furthermore, advanced navigation and positioning systems, operated by skilled captains and crew, play a pivotal role in maneuvering the ship and maintaining its stability.

Lastly, continuous maintenance and inspections are conducted to ensure structural integrity and safety.

So, next time you embark on a cruise adventure, marvel at the engineering wonders that keep these floating cities upright and steady on the open seas.

Table of Contents

Key Takeaways

  • Clear and precise communication is essential for coordination and executing emergency procedures on a cruise ship.
  • The ship’s structural integrity and safety measures, including reinforced steel hull and watertight compartments, ensure safety in case of breach or fire.
  • Safety measures for stability in rough waters, such as shielding passengers and maintaining ship strength, are crucial for a smooth voyage.
  • The ship’s design, weight distribution, and advanced stabilization systems counteract the forces of waves and wind to maintain stability, with continuous maintenance and inspections playing a role in ensuring stability.

The Importance of a Deep Draft

The importance of a deep draft for cruise ships cannot be overstated. It is crucial for maintaining stability and preventing tipping over. Draft considerations play a significant role in ensuring the ship’s stability factors are met.

The draft of a ship refers to the vertical distance between the waterline and the lowest point of the vessel. Cruise ships require a deep draft to navigate through rough waters and counterbalance the weight of passengers and amenities on board.

By having a deep draft, the ship’s center of gravity is lowered, providing stability and reducing the risk of capsizing. However, it is essential to strike a balance between having a deep draft for stability and ensuring the ship can safely navigate in shallower waters.

This leads us to the subsequent section about the role of stabilizers in maintaining balance.

The Role of Stabilizers in Maintaining Balance

Utilizing stabilizers, cruise ships maintain their balance at sea. These specially designed devices reduce roll by up to 80%. Stabilizers play a crucial role in reducing the ship’s roll, pitch, and yaw motions, caused by the forces of wind and waves.

These devices are typically located on the sides of the ship. They consist of fins that can be extended or retracted as needed. When the ship encounters rough seas, the stabilizers are extended to increase their surface area. This provides more resistance against the rolling motion, effectively counteracting the forces acting upon the ship and helping to maintain stability.

It is important to note that passenger movement also affects ship stability. The shifting weight can impact the ship’s balance. In the subsequent section about the design of the hull for stability, we will explore how the shape and structure of the ship’s hull contribute to its overall stability.

The Design of the Hull for Stability

The shape and structure of the hull play a crucial role in ensuring a stable voyage at sea. The design of the hull is carefully engineered to minimize the effects of waves and wind, and to maintain balance even in rough waters. Here are some key aspects of hull design for stability measures:

  • Bulbous Bow: A bulbous shape at the front of the hull helps to reduce drag and improve stability by deflecting waves.
  • Flared Hull: The outward flare of the hull towards the top increases buoyancy and prevents excessive rolling.
  • Hull Form: A deep V-shaped hull or a round-bottomed hull provides stability by displacing water and reducing the impact of waves.
  • Bilge Keels: These long, flat plates on the sides of the hull help to dampen rolling motions.

The design of the hull, along with other factors such as weight distribution and ballast systems, contributes to the overall stability of a cruise ship.

Weight Distribution and Ballast Systems

To ensure a smooth and stable journey, cruise ships carefully distribute weight and employ ballast systems. Weight distribution plays a crucial role in maintaining the ship’s stability and preventing it from capsizing. Cruise ships are designed with a low center of gravity, which helps to keep them upright even in rough seas. The placement of heavy machinery, fuel, and other equipment is strategically arranged to evenly distribute the weight throughout the ship.

Additionally, ballast systems are used to adjust the ship’s weight distribution as needed. These systems consist of large tanks located at the bottom of the ship, which can be filled with water or emptied to shift the ship’s center of gravity. This allows for precise control over stability.

By managing weight distribution and utilizing ballast systems, cruise ships can ensure a safe and comfortable voyage.

Moving on to advanced navigation and positioning systems…

Advanced Navigation and Positioning Systems

With state-of-the-art navigation and positioning systems, cruise ships can effortlessly glide through the open waters, maintaining their course and ensuring passengers a smooth and enjoyable voyage.

These advanced navigation systems utilize a combination of technologies such as GPS, radar, and sonar to accurately determine the ship’s position and heading. The GPS system provides precise global positioning information, while radar helps detect and track other vessels or potential obstacles in the ship’s path. Additionally, sonar technology allows for underwater mapping, ensuring a safe passage through shallow waters or avoiding submerged hazards.

These highly sophisticated systems work together to provide real-time data and allow the ship’s crew to make informed decisions regarding navigation adjustments. By continuously monitoring and adjusting the ship’s position, cruise ships can safely navigate even the most challenging routes.

Moving seamlessly into the next topic, weather monitoring and response systems play a vital role in ensuring the safety and comfort of passengers.

Weather Monitoring and Response Systems

Utilizing cutting-edge technology, cruise ships employ advanced weather monitoring and response systems to ensure the safety and comfort of passengers.

These systems rely on accurate weather forecasting to anticipate and prepare for adverse weather conditions.

By monitoring weather patterns, such as wind speed, wave height, and precipitation, the ship’s crew can make informed decisions regarding the ship’s route and speed adjustments.

In the event of severe weather, the ship is equipped with emergency response procedures to mitigate potential risks.

These procedures may involve altering the ship’s course, seeking shelter in calmer waters, or activating stabilizing measures to counteract the effects of rough seas.

The captain and crew play a crucial role in implementing these measures, utilizing their expertise to maneuver the ship safely through challenging weather conditions.

Transitioning to the subsequent section, the captain and crew’s expertise ensure the ship’s stability and navigation even in the face of adverse weather conditions.

The Role of the Captain and Crew in Maneuvering the Ship

Navigating through challenging weather conditions requires the captain and crew to rely on their expertise and quick decision-making skills. The captain’s expertise plays a crucial role in maneuvering the ship safely through rough waters. Here are four reasons why the captain and crew’s coordination is vital in these situations:

Situation assessment: The captain’s knowledge and experience allow them to assess the current weather conditions accurately. This assessment helps them make informed decisions about the ship’s course and speed.

Seamanship skills: The crew’s ability to handle the ship’s controls, such as the helm and propulsion systems, is essential for maintaining stability and control in adverse weather.

Effective communication: Clear and precise communication between the captain and crew ensures everyone is on the same page, enabling coordinated actions to respond swiftly to changing conditions.

Emergency response: In case of emergencies, the captain’s expertise and the crew’s training enable them to execute appropriate emergency procedures promptly.

Mastering the art of maneuvering in challenging weather conditions paves the way for the subsequent section about structural integrity and safety measures.

Structural Integrity and Safety Measures

The ship’s structural integrity and safety measures are like the sturdy foundation and protective walls that shield passengers from the stormy seas.

The cruise ship’s design is a testament to the principles of structural engineering, ensuring its ability to withstand the immense forces exerted by the ocean. Safety regulations dictate the materials used and construction techniques employed, ensuring the ship’s strength and durability.

The ship’s hull, made of reinforced steel, is designed to resist bending and twisting forces, while its watertight compartments prevent flooding in the event of a breach. Additionally, a comprehensive system of fire detection and suppression is in place, further safeguarding the ship and its passengers.

These meticulous safety measures ensure that the ship is well-equipped to navigate rough waters and unforeseen challenges. As we delve into the impact of waves and wind on stability, we begin to understand the crucial role these measures play in maintaining a smooth voyage.

The Impact of Waves and Wind on Stability

As discussed in the previous section, the structural integrity and safety measures of cruise ships play a crucial role in their stability. However, another important factor that affects a ship’s stability is the impact of waves and wind. Cruise ships are designed to handle rough seas and adverse weather conditions, ensuring the safety and comfort of passengers and crew. The impact of tides, which are caused by the gravitational forces of the moon and sun, can also affect a ship’s stability. To counteract these forces, cruise ships are equipped with advanced stabilization systems, such as stabilizer fins and ballast tanks, which help to reduce the rolling motion and maintain the ship’s balance. These systems work in tandem with the ship’s design and weight distribution to ensure that it stays upright even in challenging conditions. Continuous maintenance and inspections for ship stability are essential to ensure the ongoing safety and performance of the vessel.

Continuous Maintenance and Inspections for Ship Stability

To keep your cruise experience smooth and enjoyable, it’s crucial to ensure the continuous maintenance and inspections of ship stability. Maintaining the stability of a cruise ship is a complex and ongoing process that involves regular inspections and maintenance procedures. Here are three key aspects of continuous maintenance and inspections for ship stability:

Hull Integrity: Regular inspections are conducted to check the condition of the ship’s hull. This includes examining the hull for any signs of damage, corrosion, or wear and tear. Any issues found are promptly addressed to maintain the structural integrity of the ship.

Ballast Systems: Cruise ships use ballast systems to control stability. These systems are regularly inspected to ensure they are functioning properly. This involves checking the ballast tanks, valves, and pumps to ensure they are in good working condition.

Stability Calculations: Cruise ships undergo stability calculations to determine their stability in different conditions. These calculations take into account factors such as passenger loads, cargo distribution, and weather conditions. Regular checks and adjustments are made to ensure the ship remains stable and safe.

Continuous maintenance and inspections are essential for maintaining the stability of cruise ships, ensuring a safe and enjoyable experience for passengers.

Frequently Asked Questions

What are the amenities and entertainment options available on a cruise ship.

On a cruise ship, passengers can enjoy a variety of amenities and entertainment options. These include spa services for relaxation and rejuvenation, as well as onboard shopping for souvenirs and luxury goods.

How do cruise ships generate power to run their facilities and equipment?

Cruise ships generate power through onboard electrical systems. These systems consist of generators that convert mechanical energy into electrical energy, supplying power to run facilities and equipment on the ship.

Can passengers go fishing or swimming during a cruise?

Passengers are allowed to swim but fishing is restricted due to safety concerns. Swimming safety measures are in place to ensure passenger well-being. The context of cruise ship stability is unrelated to this topic.

What is the process for embarking and disembarking a cruise ship?

To embark on a cruise ship, passengers must check in at the terminal, provide identification, and go through security screenings. During disembarkation, passengers are given specific times to leave the ship and must follow instructions from the crew.

Are there medical facilities and emergency response systems on board cruise ships?

Yes, cruise ships have medical facilities and emergency response systems on board. The medical facilities are equipped to handle various medical emergencies, and the emergency response systems ensure timely and efficient response to any onboard emergencies.

Do Balcony Rooms on Cruise Ships Affect the Stability of the Ship?

Balcony rooms on cruise ships are indeed built to maintain the stability of the ship. The structural design and placement of the best balcony room cruise ship take into account the ship’s stability and ensure that the addition of balcony rooms does not compromise it.

In conclusion, the stability of cruise ships is not a matter of luck or chance. It is a result of meticulous design, engineering, and maintenance. The deep draft, stabilizers, hull design, weight distribution, and ballast systems all work together to ensure that the ship stays upright even in challenging conditions.

Advanced navigation systems and the expertise of the captain and crew also play a crucial role in maneuvering the ship safely. Continuous maintenance and inspections further guarantee the structural integrity and safety of these magnificent vessels.

So, the next time you embark on a cruise adventure, rest assured that every effort has been made to keep you safe and secure on the open seas.

how cruise ships stay upright

Meet Asra, a talented and adventurous writer who infuses her passion for exploration into every word she writes. Asra’s love for storytelling and her insatiable curiosity about the world make her an invaluable asset to the Voyager Info team.

From a young age, Asra was drawn to the power of words and their ability to transport readers to far-off lands and magical realms. Her fascination with travel and cultures from around the globe fueled her desire to become a travel writer, and she set out on a journey to turn her dreams into reality.

How Much Are Cruise Ships Worth

Woman Who Lives On A Cruise Ship

' src=

Meet Asra, a talented and adventurous writer who infuses her passion for exploration into every word she writes. Asra’s love for storytelling and her insatiable curiosity about the world make her an invaluable asset to the Voyager Info team. From a young age, Asra was drawn to the power of words and their ability to transport readers to far-off lands and magical realms. Her fascination with travel and cultures from around the globe fueled her desire to become a travel writer, and she set out on a journey to turn her dreams into reality.

how cruise ships stay upright

You may like

Which viking river cruise ship is the best.

An image showcasing the sleek silhouette of Viking River Cruise ships gliding gracefully along a scenic river, adorned with elegant balconies, panoramic windows, and a vast sundeck inviting travelers to indulge in luxurious voyages

Hello fellow explorers! As I relax on the deck of my Viking Longship, savoring a refreshing drink and absorbing the breathtaking views of the river, I am astounded by the wonders of modern cruising experiences.

Now, I know what you’re thinking: with so many Viking river cruise ships to choose from, how do you decide which one is the best? Well, fear not, because I’ve done the research for you.

In this article, we’ll be exploring the top contenders in the Viking fleet: the Eir, Herja, Skadi, Atla, Rinda, and Mani. Each ship offers its own unique blend of luxury, comfort, and amenities, making it difficult to pick a clear winner.

But fear not, dear reader, for I am here to guide you through the maze of options and help you find the perfect ship for your next adventure. So, grab a seat and let’s set sail on this exciting journey together!

  • Viking Longship Eir is a perfect choice for river cruise enthusiasts with its sleek design, spacious interiors, and top-notch itineraries on the Rhine and Danube.
  • Viking Longship Herja offers a luxurious experience with spacious staterooms, private balconies, innovative dining options, and exceptional service from friendly staff.
  • Viking Longship Skadi stands out with its sleek design, modern amenities, impeccable service, and stunning river views from spacious staterooms.
  • Viking Longship Rinda provides a luxurious and comfortable setting with elegantly designed staterooms, top-notch dining options, and immersive experiences in charming cities and villages.

Viking Longship Eir

The Viking Longship Eir is the epitome of elegance and luxury, with its sleek design and spacious interiors.

As one of the top amenities, this ship features a stunning Aquavit Terrace, where guests can enjoy panoramic views of the beautiful scenery along the river.

The ship also boasts a variety of stateroom options, all of which are tastefully decorated and equipped with modern amenities.

When it comes to itineraries, the Viking Longship Eir offers some of the best in the industry. Whether you want to explore the charming villages of the Rhine or immerse yourself in the rich history of the Danube, there is an itinerary for everyone.

With its top-notch amenities and carefully crafted itineraries, the Viking Longship Eir is a perfect choice for any river cruise enthusiast.

Now, let’s move on to the next ship, the Viking Longship Herja.

Viking Longship Herja

Embark on an unforgettable journey aboard the remarkable Viking Longship Herja! This stunning vessel offers a range of features that set it apart from other Viking river cruise ships. Let me take you through some of the highlights:

Spacious Staterooms: The Viking Longship Herja boasts elegantly designed staterooms with ample space to relax and unwind. You’ll feel right at home as you enjoy breathtaking views from your private balcony.

Innovative Aquavit Terrace: Indulge in al fresco dining at the Aquavit Terrace, a unique feature of the Herja. Savor delicious cuisine while being surrounded by stunning landscapes along the river.

State-of-the-Art Facilities: From the onboard library to the well-equipped gym, the Viking Longship Herja offers a range of modern amenities to enhance your cruising experience.

Exceptional Service: The attentive and friendly staff onboard the Herja ensure that every aspect of your journey is taken care of, ensuring a truly memorable experience.

Consistency of Quality: The Viking Longship Herja maintains the high standards that Viking is known for, providing a luxurious and comfortable cruising experience.

Now, let’s delve into the next section about the Viking Longship Skadi, where we’ll explore another exceptional vessel in the Viking fleet.

Viking Longship Skadi

Step aboard the Viking Longship Skadi and discover a world of elegance and adventure on this magnificent vessel. The Skadi is one of the finest ships in the Viking river cruise fleet, offering a luxurious and comfortable experience as you cruise along the Rhine River.

With its sleek design and modern amenities, the Skadi provides the perfect blend of style and functionality. The ship’s spacious staterooms are elegantly appointed, offering stunning views of the river. Onboard, you can enjoy delectable cuisine in the restaurant, relax with a drink in the lounge, or take in the breathtaking scenery from the sun deck.

However, like any ship, the Skadi does have some drawbacks. The smaller size of the ship means that there are fewer onboard amenities compared to larger ships. Additionally, the smaller size can also result in a more intimate and crowded atmosphere.

Despite these minor downsides, cruising the Rhine River on the Skadi is a truly unforgettable experience. With its impeccable service, stunning design, and breathtaking views, the Skadi is sure to leave you with memories that will last a lifetime.

Now, let’s move on to the next ship in the Viking river cruise fleet, the Viking Longship Atla.

Viking Longship Atla

Get ready to experience the luxurious and unforgettable Viking Longship Atla.

The Viking Longship Atla offers a range of amenities that set it apart from other Viking river cruise ships. From the moment you step on board, you’ll be greeted by the warm and inviting atmosphere that is characteristic of Viking.

The ship features comfortable and stylish staterooms, each with its own private balcony, allowing you to take in the breathtaking views as you sail along the river.

The onboard dining options are exceptional, with a variety of delicious gourmet meals prepared by talented chefs.

The Atla also offers a range of activities and entertainment, including cultural enrichment programs and live performances.

When comparing the amenities and itineraries of the Viking Longship Atla with other Viking river cruise ships, it is clear that the Atla stands out as a top choice for discerning travelers.

Now, let’s move on to the next section and explore the wonders of the Viking Longship Rinda.

Viking Longship Rinda

Prepare to be amazed by the exceptional features and captivating experiences awaiting you on the Viking Longship Rinda. As one of the best river cruise ships, the Rinda offers a luxurious and comfortable setting.

Its spacious staterooms are elegantly designed, featuring modern amenities and stunning views of the river. The ship’s top-notch dining options ensure that every meal is a culinary delight, with a variety of gourmet dishes to satisfy even the most discerning palate.

Cruising along the Viking Longship Rinda route, you’ll have the opportunity to explore top attractions such as the breathtaking Rhine Gorge with its picturesque vineyards and medieval castles. The charming cities of Cologne and Amsterdam await, offering a rich blend of history, culture, and vibrant nightlife.

Immerse yourself in the local traditions as you visit quaint villages and sample the finest wines of the region.

Now, let’s move on to the next section and discover the wonders of the Viking Longship Mani.

Viking Longship Mani

The Viking Longship Mani offers spacious staterooms with modern amenities and breathtaking views. It is an exceptional choice for a luxurious river voyage.

Onboard, you’ll find top amenities that cater to your every need. The elegant Aquavit Terrace is the perfect spot to enjoy a drink while taking in the stunning scenery.

The Sun Deck offers a relaxing retreat with comfortable loungers and a walking track for those looking to stay active.

Indulge in delicious cuisine at the Restaurant, where you can savor a variety of dishes prepared by skilled chefs.

As for the excursions, the Viking Longship Mani offers the best options to explore each destination. From guided tours of historic landmarks to immersive cultural experiences, you’ll have the opportunity to truly immerse yourself in the local culture.

With its luxurious accommodations and unforgettable experiences, the Viking Longship Mani stands out as one of the best choices for a remarkable river cruise.

What are the specific itineraries offered by each Viking Longship mentioned in the article?

The specific itineraries offered by each Viking longship vary, allowing travelers to explore different regions along rivers like the Rhine, Danube, and Seine. Each itinerary offers unique cultural experiences and breathtaking scenery. Pros of taking a Viking River Cruise include luxurious accommodations, exceptional service, and immersive shore excursions. However, cons may include limited onboard entertainment options and potentially crowded ports.

How many cabins and passengers can each of these Viking Longships accommodate?

Each Viking Longship has a different cabin and passenger capacity. For example, the Viking Einar can accommodate up to 190 passengers in 95 cabins. The Viking Egil, on the other hand, can hold 190 passengers in 95 cabins as well.

Are there any specific onboard amenities or facilities unique to each of these Viking Longships?

Onboard amenities of Viking Longships: Each ship offers unique facilities like the Aquavit Terrace for al fresco dining, the Viking Lounge for panoramic views, and the Sun Deck for relaxation. These amenities create a luxurious and enjoyable cruising experience.

Can you provide information about the crew members on board each of these Viking Longships?

Viking longship crew members are the heart and soul of the Viking river cruise experience. They are knowledgeable, friendly, and passionate about sharing their expertise. From the captain to the waitstaff, they go above and beyond to make your journey unforgettable.

Are there any additional costs or optional excursions available on these Viking Longships?

On Viking longships, there are optional excursions available for an additional cost. These excursions offer unique experiences, like guided tours, cultural activities, and culinary adventures, allowing you to customize your river cruise and make unforgettable memories.

Is the Best Viking River Cruise Ship also Suitable for a Baltic Cruise?

When choosing the best cruise line for Baltic , it’s important to consider whether a Viking river cruise ship is suitable. While Viking is known for its exceptional river cruises, their ocean ships also offer Baltic itineraries with luxurious accommodations, immersive excursions, and outstanding service, making them a top choice for Baltic cruises.

After carefully considering all the options, I must say that the Viking Longship Skadi has stolen my heart. From the moment I stepped foot on board, I was captivated by its elegant design and luxurious amenities.

The Skadi truly embodies the spirit of Viking river cruises, offering a seamless blend of comfort and adventure. Whether you’re exploring the stunning landscapes of Europe or indulging in the ship’s world-class cuisine, the Skadi never fails to impress.

It’s no coincidence that this ship is regarded as one of the best. Embark on a journey with the Skadi and you’ll understand why.

What Cruise Goes To Jamaica

An image showcasing a magnificent cruise ship gliding through crystal-clear turquoise waters, adorned with vibrant tropical flowers

Ever dreamed of getting away to a tropical paradise? I’ve got thrilling news for you! Jamaica, famous for its crystal-clear waters, vibrant culture, and stunning landscapes, is just a cruise trip away.

Picture yourself lounging on pristine white sandy beaches, sipping a refreshing cocktail as the warm Caribbean breeze gently caresses your skin. Sounds like heaven, doesn’t it?

Luckily, there are plenty of cruise lines that offer voyages to this idyllic island. From Royal Caribbean to Carnival, you’ll find a wide range of options to suit your preferences and budget.

Whether you’re looking to explore the bustling city of Montego Bay, soak up the reggae vibes in Ocho Rios, or immerse yourself in the rich history of Falmouth, Jamaica has something for everyone.

So, pack your bags and get ready to embark on the adventure of a lifetime. Your Jamaican cruise awaits!

  • Research popular cruise lines and their itineraries to Jamaica
  • Consider the duration and timing of the cruise to Jamaica
  • Plan activities and excursions in Jamaica in advance
  • Prepare necessary travel documents for a smooth embarkation process to Jamaica

Cruise Lines that Visit Jamaica

Many cruise lines sail to Jamaica and offer a taste of the island’s vibrant culture. Among the popular cruise ships that visit Jamaica are Royal Caribbean International, Carnival Cruise Line, and Norwegian Cruise Line.

These cruise lines provide the best cruise deals for those looking to experience the beauty and charm of Jamaica. Royal Caribbean International offers a variety of itineraries that include stops in popular ports such as Montego Bay, Ocho Rios, and Falmouth. Carnival Cruise Line also offers exciting trips to Jamaica, with stops in Montego Bay and Ocho Rios. Norwegian Cruise Line is another great option, offering itineraries that include visits to popular ports like Montego Bay and Falmouth.

With so many cruise lines to choose from, you can find the perfect trip to Jamaica that suits your preferences and interests.

Now let’s explore the popular ports in Jamaica.

Popular Ports in Jamaica

Explore the vibrant island of Jamaica, where you can dock at popular ports like Montego Bay and Ocho Rios, immersing yourself in the rich culture and breathtaking landscapes.

Indulge in the rhythmic beats of reggae music as you dance the night away in Montego Bay.

Dive into crystal clear waters and swim alongside colorful tropical fish at the stunning Doctor’s Cave Beach.

Get a taste of history and adventure at Dunn’s River Falls in Ocho Rios, where you can climb the cascading waterfalls and soak in the natural beauty.

Unwind on the white sandy beaches of Negril, known for its laid-back atmosphere and stunning sunsets.

Explore the lush rainforests of the Blue Mountains, home to exotic flora and fauna, and savor a cup of world-renowned Jamaican coffee.

After exploring the popular ports and soaking up the sun on the best beaches in Jamaica, it’s time to delve into the exciting activities and excursions that this vibrant island has to offer.

Activities and Excursions in Jamaica

From zip-lining through lush rainforests to snorkeling in vibrant coral reefs, there is no shortage of thrilling activities and excursions to experience in Jamaica.

In Ocho Rios, you can embark on exciting excursions that take you to the famous Dunn’s River Falls, where you can climb the terraced rocks and cool off in the refreshing cascades.

For adventure activities in Montego Bay, you can try your hand at parasailing, jet skiing, or even go on a thrilling dune buggy tour through the scenic countryside.

Whether you’re a nature lover or an adrenaline junkie, Jamaica offers something for everyone.

Now, let’s transition to the next section and talk about the best time to visit Jamaica.

Best Time to Visit Jamaica

The ideal time to experience the beauty of Jamaica is during the sunny months of the year when the island is dressed in its vibrant tropical attire. With its warm weather and clear skies, Jamaica offers the perfect backdrop for exploring its best resorts and top tourist attractions.

Whether you choose to relax on the stunning beaches of Montego Bay or indulge in the luxurious amenities of Negril, there are plenty of options to suit every traveler’s taste. For adventure seekers, Dunn’s River Falls in Ocho Rios is a must-visit, while history buffs will enjoy exploring the colonial architecture of Falmouth.

As you plan your trip, keep in mind that the best time to visit Jamaica is from November to mid-December, when the weather is pleasant and the crowds are smaller.

Now, let’s dive into choosing the right cruise package to make the most of your Jamaican adventure.

Choosing the Right Cruise Package

When it comes to choosing the right cruise package, there are a few key points to consider.

First, determine the length of your cruise, as this will greatly impact your overall experience.

Next, be sure to compare prices and inclusions, as different cruise lines offer different amenities and activities.

By taking these factors into account, you can ensure that you select a cruise package that perfectly suits your preferences and budget.

Determine the Length of Your Cruise

When determining the length of your cruise, there are a few factors to consider. First, think about the type of experience you want. Are you looking for a short and sweet getaway, or do you prefer a longer, more immersive adventure?

A shorter cruise, typically ranging from 3 to 5 nights, allows you to visit Jamaica and enjoy its stunning beaches, vibrant culture, and delicious cuisine. It’s perfect if you’re looking for a quick taste of the island and want to relax on the beautiful shores.

On the other hand, a longer cruise, spanning 7 to 10 nights or more, gives you the opportunity to explore multiple destinations in Jamaica. You can visit places like Montego Bay, Ocho Rios, and Kingston, and truly soak in the island’s beauty. This option is great if you want to have a more extensive exploration and experience the diversity of Jamaica.

So, whether you’re seeking a quick getaway or a more extensive exploration, the length of your cruise will play a crucial role in shaping your unforgettable Caribbean experience. Take some time to consider your preferences and choose the duration that suits you best.

Compare Prices and Inclusions

Compare prices and inclusions to discover the perfect Jamaican adventure for your dream cruise.

When it comes to planning your cruise, it’s important to compare prices from different cruise lines to ensure you’re getting the best deal.

Take into account what is included in each package, such as meals, entertainment, and excursions. Some cruise lines may offer exclusive deals or upgrades that are worth considering.

By comparing prices and inclusions, you can choose a package that suits your budget and preferences.

Once you’ve made your decision, it’s time to start preparing for your Jamaican cruise. Get ready to immerse yourself in the vibrant culture, stunning beaches, and delicious cuisine of Jamaica.

Preparing for Your Jamaican Cruise

Pack your bags and get ready for an unforgettable Jamaican cruise experience! Choosing the right cruise ship for your Jamaican adventure is essential. There are several popular cruise destinations in Jamaica, including Montego Bay, Ocho Rios, and Falmouth. Each port offers unique experiences, from exploring Dunn’s River Falls in Ocho Rios to snorkeling in the crystal-clear waters of Montego Bay. To help you make the most of your cruise, I’ve prepared a table below highlighting the attractions and activities in each port. As you plan your trip, keep in mind the safety and security measures in Jamaica. It’s important to be aware of your surroundings and take precautions to ensure a safe journey. Now, let’s dive into the next section to learn more about safety and security in Jamaica.

Safety and Security in Jamaica

When it comes to traveling to Jamaica, it’s important to prioritize safety and security. Before embarking on your Jamaican adventure, I highly recommend researching safety tips and precautions to ensure a smooth and worry-free trip.

Additionally, familiarize yourself with the local laws and customs to avoid any unnecessary misunderstandings or conflicts. By being well-prepared and informed, you can fully enjoy the beauty and culture that Jamaica has to offer.

Research Safety Tips and Precautions

Although sailing the beautiful Caribbean waters to reach Jamaica may seem like a dream come true, it is crucial to prioritize research on safety tips and precautions before embarking on a cruise.

When researching cruise safety, it is important to consider the popular tourist attractions in Jamaica and the recommended activities and excursions available. Additionally, it is essential to understand the best time to visit Jamaica and explore the various cruise package options, comparing prices and inclusions.

By preparing for a Jamaican cruise, you can ensure that you make the most of your time on the island and have an unforgettable experience. Don’t forget to familiarize yourself with the local laws and customs, as this will help you navigate the destination with ease.

Knowing these important details will ensure a smooth transition into the subsequent section about understanding safety and security in Jamaica.

Know the Local Laws and Customs

Familiarize yourself with the local laws and customs in order to fully immerse yourself in the vibrant culture of Jamaica and ensure a seamless experience while exploring the island. Knowing local customs and cultural etiquette is essential to show respect and avoid any unintentional offense.

Jamaicans are warm and welcoming people, and they appreciate visitors who make an effort to understand their way of life. For example, it is customary to greet others with a friendly ‘Good morning’ or ‘Good afternoon’ and to use ‘please’ and ‘thank you’ in interactions.

Additionally, it is important to dress modestly when visiting religious sites or local communities. By respecting these customs, you will be able to connect with the locals and have a more enriching experience during your time in Jamaica.

Now, let’s explore how to make the most of your time on this beautiful island.

Making the Most of Your Time in Jamaica

Ready to soak up the sun and immerse yourself in Jamaican culture? Make sure you don’t miss out on maximizing your time in this tropical paradise! Here are three ways to make the most of your time in Jamaica and explore its vibrant cuisine:

Indulge in the flavors of Jamaican cuisine: From jerk chicken to ackee and saltfish, Jamaican food is a delight for the taste buds. Don’t miss the chance to try traditional dishes at local restaurants or street food stalls.

Take a cooking class: Learn the secrets of Jamaican cooking by taking a cooking class. Not only will you get to taste amazing dishes, but you’ll also learn how to recreate them at home.

Visit local markets: Immerse yourself in the local culture by exploring the bustling markets in Jamaica. From fresh fruits and vegetables to spices and souvenirs, the markets offer a vibrant sensory experience.

As you explore the culinary delights of Jamaica, don’t forget to also check out the amazing selection of Jamaican souvenirs and shopping options available.

Jamaican Souvenirs and Shopping

Don’t miss out on the opportunity to bring a piece of Jamaica home with you by exploring the vibrant world of Jamaican souvenirs and shopping. When it comes to finding authentic Jamaican products, there is no shortage of options. From colorful artwork to handcrafted jewelry, the local markets and shops offer a wide range of unique items that showcase the rich culture and craftsmanship of Jamaica.

One of the highlights of shopping in Jamaica is the chance to discover traditional Jamaican crafts. Whether it’s a beautifully woven basket made from local materials or a hand-painted wooden carving, these crafts reflect the talent and creativity of the Jamaican people.

To help you navigate the world of Jamaican souvenirs, here’s a handy table showcasing some popular items and where you can find them:

As you can see, there’s something for everyone in the world of Jamaican souvenirs. So, fill your suitcase with these authentic treasures and get ready for a memorable Jamaican cruise experience.

Now, let’s move on to some tips for making your Jamaican cruise truly unforgettable.

Tips for a Memorable Jamaican Cruise

Tips for a Memorable Jamaican Cruise:

Research and plan ahead: Before embarking on your Jamaican cruise, take the time to research the various activities and attractions available at each port of call. This will help you make the most of your time and ensure that you don’t miss out on any must-see sights or experiences.

Pack accordingly: Don’t forget to pack essentials such as sunscreen, insect repellent, and comfortable walking shoes. Also, consider bringing a waterproof camera or a GoPro to capture all the amazing moments during your Jamaican adventure.

Embrace the local culture: One of the best ways to make your Jamaican cruise truly memorable is to immerse yourself in the local culture. Take the time to learn a few basic phrases in Jamaican Patois, try the traditional dishes, and engage in conversations with the locals. This will not only enhance your experience but also create lasting memories.

Be open to new experiences: Whether it’s trying new activities or sampling unfamiliar foods, be open to stepping out of your comfort zone. You never know what incredible experiences await you on your Jamaican cruise, so embrace the opportunity to try something new and create unforgettable memories.

Take time to relax: While there may be a temptation to fill every moment of your Jamaican cruise with exciting activities, don’t forget to take time to relax and unwind. Whether it’s lounging by the pool, enjoying a spa treatment, or simply taking a leisurely stroll along the beach, make sure to prioritize self-care and relaxation during your cruise.

Capture the memories: Finally, don’t forget to capture the memories of your Jamaican cruise. Take plenty of photos, keep a travel journal, or even create a scrapbook to document your experiences. These mementos will serve as a reminder of your amazing adventure and allow you to relive the memories for years to come.

By following these tips, you can ensure that your Jamaican cruise is truly memorable and leaves a lasting impression. So get ready to embark on an unforgettable journey filled with adventure, culture, and incredible experiences.

How much does a cruise to Jamaica typically cost?

Typically, a cruise to Jamaica can cost anywhere from a few hundred to several thousand dollars, depending on the cruise package inclusions. It’s best to book a cruise during the off-peak season for better deals.

What are the visa requirements for visiting Jamaica on a cruise?

To visit Jamaica on a cruise, you’ll need to check the visa requirements and travel restrictions. Make sure you have the necessary documents and meet any entry criteria set by the Jamaican government.

Are there any specific health precautions that should be taken before traveling to Jamaica on a cruise?

Before traveling to Jamaica on a cruise, it’s important to take necessary health precautions and ensure travel safety. This includes staying updated on vaccinations, practicing good hygiene, and being aware of any potential health risks in the area.

Can I bring my own alcohol on board the cruise ship to Jamaica?

Sure, you can bring your own alcohol on board the cruise ship to Jamaica. However, be aware of packing restrictions and guidelines for bringing personal items. Make sure to check with the cruise line beforehand for specific rules.

Are there any cultural customs or etiquette that I should be aware of when visiting Jamaica on a cruise?

When visiting Jamaica on a cruise, it is important to be aware of the cultural customs and etiquette. Respect the locals, try the delicious cuisine, immerse yourself in the vibrant music and dance, and enjoy the unique cruise experience.

Can I Visit Jamaica on an Alaskan Cruise?

While you can’t visit Jamaica on an Alaskan cruise, you can definitely witness the magnificent glaciers on Alaskan cruise s. These stunning natural wonders offer a once-in-a-lifetime experience, with their breathtaking beauty and massive size. Exploring the glaciers on an Alaskan cruise is a truly unforgettable adventure.

In conclusion, choosing a cruise to Jamaica is an exciting and unforgettable experience. With numerous cruise lines offering visits to this vibrant island, you’ll have plenty of options to explore its popular ports and partake in exciting activities and excursions.

Whether you visit during the sunny months of November to April or prefer the quieter off-season, Jamaica offers something for everyone. Remember to prioritize safety and security, and don’t forget to indulge in the local culture and bring back some unique Jamaican souvenirs.

Get ready for a memorable journey to paradise!

Introducing Wonder Of The Seas: Royal Caribbean’s Largest Ship In China

An image showcasing Wonder of the Seas, Royal Caribbean's largest ship in China

Get ready to embark on an unmatched cruise adventure of your dreams as Royal Caribbean introduces the Wonder of the Seas, their largest vessel ever, set to sail from China.

This magnificent vessel will redefine luxury and excitement, offering an unforgettable experience like no other. With its state-of-the-art amenities, thrilling entertainment, and innovative dining options, Wonder of the Seas will transport you to a world of pure indulgence.

Join me as we explore the incredible features and upcoming announcements of this remarkable ship, set to revolutionize cruising in China and beyond.

  • Wonder of the Seas is the fifth Oasis Class ship by Royal Caribbean and will be the largest cruise ship in China.
  • The ship will be homeported in Shanghai and will be the first Oasis Class ship to sail in the Asia Pacific region.
  • Wonder of the Seas will incorporate the iconic seven-neighborhood concept and offer thrilling experiences, imaginative dining, and unparalleled entertainment.
  • The construction of Wonder of the Seas has begun at the Chantiers de l’Atlantique shipyard in France, with the keel-laying ceremony marking the official start of construction.

Name and Homeport

I’m excited to hear that the fifth Oasis Class ship from Royal Caribbean will be named Wonder of the Seas and will have its homeport in Shanghai, China.

This announcement is not only a thrilling development for cruise enthusiasts but also has significant implications for the Chinese tourism industry and economic benefits for Shanghai.

With the introduction of Wonder of the Seas, Royal Caribbean is bringing its largest ship to China, showcasing their commitment to catering to the growing demand for luxury cruising in the Asia Pacific region.

This move is expected to attract a massive influx of tourists to Shanghai, boosting the local economy and creating job opportunities.

Moreover, the presence of such a magnificent vessel in Shanghai’s harbor will undoubtedly raise the city’s profile as a top global destination.

The combination of Wonder of the Seas’ grandeur and Shanghai’s vibrant culture is set to create an unforgettable experience for both travelers and locals alike.

Features and Amenities

Equipped with mind-blowing technology and jaw-dropping features, this colossal cruise vessel takes luxury to a whole new level. Wonder of the Seas offers a plethora of thrilling experiences that will leave passengers in awe.

From heart-pounding activities to imaginative dining options, there is something for everyone onboard. The ship incorporates the iconic seven-neighborhood concept, ensuring that guests have access to a variety of entertainment and relaxation options.

And when it comes to technology, Wonder of the Seas is equipped with the latest advancements, providing an unparalleled experience for its passengers. From state-of-the-art facilities to interactive entertainment, the ship truly embraces the future.

Whether you’re looking for an adrenaline rush or a moment of tranquility, Wonder of the Seas is sure to exceed your expectations.

Construction Details

The construction of the world’s largest cruise ship began with a keel-laying ceremony at the shipyard in France. It was an exciting moment as the Wonders Keel, a massive 970-tonne block, was lifted onto the building dock.

I watched in awe as a 1,400-tonne crane carefully maneuvered the block into place, marking the official start of the ship’s construction. The shipyard, Chantiers de l’Atlantique in Saint-Nazaire, is known for its expertise in building exceptional vessels.

As the construction progresses, I can’t help but be amazed at the intricate details and precision that goes into creating this masterpiece. It’s a testament to Royal Caribbean’s commitment to providing the ultimate cruising experience.

I can’t wait to see the Wonder of the Seas come to life and embark on its maiden voyage in 2021. Stay tuned for more updates on this incredible ship.

Upcoming Announcements

As the anticipation builds, I eagerly await the exciting updates and announcements from the cruise line about their upcoming masterpiece. Wonder of the Seas promises to be a game-changer in the world of cruising, and I can’t wait to see what it has in store for us. While we eagerly await more information, here’s a glimpse into what we can expect from this magnificent ship.

Itineraries and Adventures:

  • Royal Caribbean is known for offering a wide range of itineraries and adventures, catering to different interests and preferences. From exotic destinations to thrilling shore excursions, Wonder of the Seas is sure to provide unforgettable experiences for all.

Financial Aspects:

  • Luxury cruises may seem expensive at first glance, but they offer excellent value for money. When calculating the cost, it’s important to consider the all-inclusive nature of these cruises, which covers accommodation, meals, entertainment, and transportation to various destinations. Compared to other types of vacations, luxury cruises often prove to be more cost-effective.

Stay tuned for more updates and exciting announcements from Royal Caribbean about Wonder of the Seas. The wait is almost over, and I can’t wait to embark on this extraordinary adventure.

Tips for Beating the Crowds

While exploring the crowded decks of a cruise ship, I discovered some useful tips for beating the crowds and making the most of my vacation.

One of the best tips I found was to start by researching and booking your cruise early. By doing this, you can often find the best deals and secure your preferred cabin location.

Another strategy for avoiding long lines is to plan your activities and dining reservations ahead of time. This way, you can bypass the queues and make the most of your time onboard.

Additionally, taking advantage of off-peak times can also help you beat the crowds. Whether it’s enjoying the pool in the morning or dining during non-peak hours, being flexible with your schedule can make a big difference.

Overall, with a little planning and these tips in mind, you can make your cruise experience more enjoyable and avoid the crowds.

Benefits of Sea Days

One of the most amazing things about sea days on a cruise is the opportunity to completely unwind and relax without any distractions. It’s a chance to escape the hustle and bustle of daily life and simply enjoy the beauty of the open sea.

One of the advantages of sea days is the abundance of relaxation opportunities available. Whether it’s lounging by the pool with a refreshing drink in hand, indulging in a spa treatment, or simply taking a leisurely stroll on the deck, there’s something for everyone to enjoy.

These days allow you to slow down, recharge, and rejuvenate both your body and mind. The peacefulness of the ocean combined with the luxurious amenities on board create the perfect setting for ultimate relaxation.

So sit back, unwind, and let the worries of the world melt away as you sail to your next destination.

Cost of Luxury Cruises

I’ve always been curious about the cost of luxury cruises and how they compare to other types of vacations. When it comes to planning a vacation, there are several factors to consider when calculating the cost of a luxury cruise.

Firstly, the price of a luxury cruise includes accommodation, meals, and entertainment, which can often be more cost-effective than booking these components separately. Additionally, luxury cruises offer a wide range of amenities and services, such as spa treatments and fine dining, which can add value to your vacation experience.

In comparison to other types of vacations, luxury cruises may seem more expensive at first glance. However, when you factor in the all-inclusive nature of a cruise and the variety of activities and entertainment options available onboard, the value provided by luxury cruises becomes apparent.

So, if you’re looking for a vacation that offers convenience, relaxation, and unparalleled experiences, a luxury cruise may be worth considering.

Best Ship for Kids

The best ship for kids, without a doubt, is Royal Caribbean’s Wonder of the Seas. This magnificent vessel offers a plethora of playful and exciting amenities to keep young cruisers entertained throughout their voyage.

From the moment they step onboard, children will be captivated by the endless options for kids’ entertainment. The ship boasts an array of family-friendly activities, including thrilling water slides, a dedicated kids’ pool, and a state-of-the-art arcade.

The Adventure Ocean Youth Program provides supervised fun for children of all ages, with age-appropriate activities and games. Parents can relax knowing that safety is a top priority, with child-friendly facilities and trained staff.

The ship also offers interactive shows and character meet-and-greets, making every day an adventure for the little ones. Royal Caribbean’s Wonder of the Seas truly is a dream come true for families seeking an unforgettable cruise experience.

How many passengers can the Wonder of the Seas accommodate?

The Wonder of the Seas can accommodate a large number of passengers, making it one of the largest cruise ships in the world. With its spacious design and state-of-the-art facilities, it is capable of hosting thousands of guests for an unforgettable cruise experience.

What is the estimated cost of constructing the Wonder of the Seas?

The estimated cost of constructing the Wonder of the Seas is a staggering sum, like building a majestic castle in the sky. While the specific amount hasn’t been disclosed, it’s expected to be in the billions of dollars.

Will the Wonder of the Seas have any environmentally-friendly features?

Yes, the Wonder of the Seas will have sustainability initiatives and an energy efficient design. Royal Caribbean is committed to environmental stewardship and is incorporating eco-friendly features to minimize the ship’s carbon footprint and promote sustainable cruising.

Can you provide a sneak peek of the entertainment options on board the Wonder of the Seas?

Sure! Entertainment options on board the Wonder of the Seas are truly spectacular. From Broadway-style shows and live performances to thrilling water slides and a state-of-the-art casino, there’s something for everyone. Dining experiences offer a variety of cuisines to satisfy any palate.

Will there be any special promotions or offers for the inaugural sailings of the Wonder of the Seas?

Yes, there will be special promotions and offers for the inaugural sailings of the Wonder of the Seas. For example, Royal Caribbean may offer discounts, incentives, or exclusive packages to entice passengers to experience their newest and largest ship.

Is Wonder of the Seas the Newest Royal Caribbean Cruise Ship in China?

Yes, the Wonder of the Seas is the newest Royal Caribbean cruise ship , and it is set to debut in China. This massive ship is packed with exciting amenities and is sure to provide an unforgettable experience for anyone lucky enough to set sail on it.

In conclusion, Wonder of the Seas is set to revolutionize the cruise industry in China. With its impressive size, innovative features, and exciting amenities, this ship promises to deliver an unforgettable experience for passengers.

From thrilling adventures to exquisite dining options, there is something for everyone onboard. As the construction continues, we eagerly await the upcoming announcements that will reveal the itineraries and adventures that await us.

So stay tuned and get ready to embark on a luxurious and thrilling journey with Wonder of the Seas.

Affiliate disclaimer

As an affiliate, we may earn a commission from qualifying purchases. We get commissions for purchases made through links on this website from Amazon and other third parties.

An image showcasing the sleek silhouette of Viking River Cruise ships gliding gracefully along a scenic river, adorned with elegant balconies, panoramic windows, and a vast sundeck inviting travelers to indulge in luxurious voyages

How Much Does A Margaritaville Cruise Cost?

An image showcasing a sunny harbor lined with palm trees, where a majestic cruise ship awaits

When Can You Board A Cruise Ship

An image depicting a luxurious Celebrity Cruise Ship emerging from a shimmering ocean backdrop, showcasing its newly refurbished exterior with pristine decks, modernized amenities, and gleaming glass panels

Which Celebrity Cruise Ships Have Been Refurbished

An image showcasing a vibrant poolside scene on a Princess Cruise ship, with guests enjoying a refreshing array of drinks

What Drinks Can You Bring On Princess Cruise

An image showcasing the Tesla Model 3 dashboard with a driver's hand gently gripping the steering wheel

How To Turn On Cruise Control Tesla Model 3

An image of a serene ocean expanse, showcasing a luxurious cruise ship gliding past vibrant pink and orange skies at sunset

What Is The Weather Like On A Transatlantic Cruise In April

An image showcasing a close-up of a Tesla Model Y's steering wheel, with the driver's hand lightly resting on it

How To Set Cruise Control Tesla Model Y

adventure and relaxation at playa mia

Ultimate Adventure and Relaxation Guide at Playa Mia Grand Beach Park

sharkbanz fearless travel protection

What Makes Sharkbanz Your Ultimate Fearless Travel Protection?

vietnamese travel adventures await

Enchanting Destinations in Vietnam: Exploring Hoi Hanoi Halong Bay

uncovering juneau s rich heritage

Exploring Juneau: History Wilderness Local Delights Uncovered

An image showcasing the evolution of Azamara Onward: Start with a vintage shipyard, then transform it into a luxurious modern vessel through a mesmerizing sequence of construction, renovation, and futuristic upgrades

Azamara Onward: Origins, Renovation, and Future Plans

An image depicting a luxurious Celebrity Cruise Ship emerging from a shimmering ocean backdrop, showcasing its newly refurbished exterior with pristine decks, modernized amenities, and gleaming glass panels

How To Check Weather For A Cruise

An image showcasing a serene water taxi journey from the iconic canals of Venice, passing through picturesque lagoons, and arriving at the vibrant Chioggia Cruise Terminal, surrounded by colorful sailboats and a bustling waterfront promenade

How To Get From Venice To Chioggia Cruise Terminal

An image showcasing a sun-kissed deck overlooking a pristine infinity pool, adorned with colorful beach towels

How Do You Qualify For An Ultra Cruise On Carnival

Discover Secrets of How Do Cruise Ships Float And Not Tip Over?

If you’re like me who overthink about whatever they see or wherever they are, then you must have been concerned about how do cruise ships float and not tip over.

While coming back from my last cruise, I promised myself to solve this mystery and here I am ready to share all my findings with you. You will be amazed to know that cruising is one of the safest travel on this earth. Yes, it is.

I have done some research work and talked to a few cruise engineers to base my hypothesis on solid grounds. So, what did I conclude? Actually, it’s all about science, design, and smart building.

cruise ship floats on the sea

Yes, these massive ships stay upright and safe for everyone on board due to some cool tricks. There are a lot of amazing facts that I found out during my research journey.

Now, I am ready to share what I learned. So, in this blog, we’ll look at how these big ships stay on top of the water and why they don’t tip over.

Let’s get a little deeper into the amazing world of cruise ships together and discover how they do it!

Table of Contents

How Does A Cruise Ship Float?

A ship floats because of the buoyant force which is a crucial factor that counters the weight of the ship. It also allows it to remain floating on the water. Let’s discuss all the counting factors that play this phenomenon.

Cruise Ship Float

1- Bulkheads: Understand How Ships Stay Upright

Bulkheads are essential to ensure a cruise ship’s stability. Compartmentalizing the ship into separate sections not only contributes to the structural integrity but also keeps the cruise ship upright.

This division helps manage the ship’s stability effectively and ensures that it can withstand various sea conditions.

2- Watertight Compartments: The Key To Buoyancy And Stability

Watertight Compartments serve as the foundation for a ship’s buoyancy and stability. The principle here is straightforward: a ship stays upright because the weight of the water it displaces is less than the total weight of the ship which makes it denser than water.

These compartments ensure that even if water breaches one section, the entire vessel doesn’t become compromised.

3- Sounding Tubes: How They Maintain The Center Of Buoyancy

Sounding Tubes are critical in maintaining the ship’s center of buoyancy. They allow the crew to monitor and manage the water levels within the ship. It ultimately ensures that the center of buoyancy moves appropriately to keep the ship balanced and prevent it from tipping.

4- Trim and List: Ship Stability Mechanics

The concepts of Trim and List are central to understanding the ship stability mechanics. Trim refers to the longitudinal tilt of the ship, while list is the lateral tilt.

If you want to keep the vessel upright, managing these aspects is crucial. It ensures that cruise ships stay balanced and can return to an upright position after being disturbed by wave action.

Ship Stability Mechanics

5- Free Surface Effect: Cruise Ship’s Center Of Buoyancy

The Free Surface Effect poses a challenge to cruise ship stability, as it involves the movement of liquid within the ship. This affects the ship’s center of gravity.

Strategies to mitigate this effect include compartmentalization and the use of anti-roll tanks to reduce the impact on the ship’s stability.

6- Metacentric Height (GM): The Center Of Gravity In Cruise Ship Stability

Metacentric Height (GM) is a key parameter that ensures the ship’s ability to resist tipping. It represents the distance between the center of gravity and the metacenter, where a higher GM indicates greater stability.

Hence helps to keep the ship from tipping over in rough seas.

7- Ballast Tanks: Help Cruise Ships Float And Stay Upright

Ballast Tanks are ingeniously used to help cruise float and stay upright. The ship can alter its center of gravity by adjusting the amount of water in these tanks. This creates an upward force that counteracts the downward force of the ship’s weight and effectively keeps the ship stable.

8- Gross Tonnage (GT): Keeps Cruise Ship Stable

While cruising on the Icon of the Sea, the largest ship of the Royal Caribbean , I kept thinking about how these giants keep floating. And that’s when I found out about Gross Tonnage (GT). It’s a measure that shows the overall internal space or volume of a ship.

Gross Tonnage affects the distribution of mass and volume of the large ships for optimal stability. So, the reason why these large ships move with stability is basically their internal space and not their overall weight.

9- Dynamic Stability: Prevents The Ship From Tipping

Dynamic stability is the ability of the ship that make it stable and prevent it from tipping under external forces. This concept is crucial to ensure that cruise ships can safely navigate through different sea conditions.

10- Stability Criteria And Regulations

Adherence to Stability Criteria and Regulations set forth by the cruise industry ensures that cruise ships are designed and operated to meet stringent safety and stability standards.

These criteria are vital to prevent accidents and ensure the passengers’ crew’s safety.

What Causes Cruise Ships To Sink?

why cruise ship sinks

It’s not just one but many factors that cause a ship to sink. Most of the time, it’s the water that gets inside the ship and makes it less buoyant. This happens if the ship hits something big like an iceberg or gets a massive tear in its hull.

Do you remember the legend Titanic? That’s what happened with this historical giant of the sea. Titanic, as compared to modern cruise ships , wasn’t supported by various factors we discussed earlier in this blog. So, simply by hitting an iceberg, the water rushed in, and the Titanic went down within hours.

Unlike Titanic, modern ships are designed super smartly to avoid these problems. They have special sections and alarms to keep water out and prevent ships from sinking.

So, even though there might be some risks today’s cruise ships are much safer because of advanced engineering and strict safety rules.

How Likely A Cruise Ship Can Tip?

Now, how often do you think a cruise ship might tip over? I know it sounds scary, but actually, it’s very rare.

Today’s engineers design ships very carefully and plan the routes even more meticulously to avoid any mishap in the seas. So, it’s very unlikely for a  cruise ship to sink . Experts say that the technology and design of these ships keep them stable, even in rough water.

After the Titanic, in the last 100 years, fewer than 25 cruise ships have tipped in the ocean.

So, when you’re cruising, you’re on one of the safest ways to travel. The chance that a cruise ship would tip is so low that it’s not something I worry about when planning my next cruise adventure.

How Much Of A Cruise Ship Is Underwater?

Cruise Ship Is Underwater

It’s all about the ship’s draft. The draft is the part of the ship below the waterline – basically, the bottom of the ship that you can’t see when it’s floating.

A major portion of the ship (depending upon its size) is submerged to make sure that it’s stable and buoyant. This balance keeps the ship steady and helps it glide smoothly across the water.

So, when you’re looking out at the sea from one side of the ship, remember, there’s a whole underwater section keeping you afloat.

Do Cruise Ships Have Flat Bottoms?

Well, not all cruises have flat bottoms. But surely, this shape can be beneficial in certain conditions and provide a larger surface area for stability. However, many cruise ships have a variety of hull shapes. These huls are designed to balance efficiently through the water. It proves that there’s a lot of science behind that smooth sail.

Let me make it more clear to you. To do so, we will have a look at the chemistry of hull design. There is a phenomenon known as Archimedes’ principle, which will help you understand all this.

According to this principle, the buoyant force acting on a submerged object is the same as the fluid’s weight that the object displaces. So, cruise ships are designed for optimal stability and buoyancy.

What Is The Most Stable Part Of A Cruise Ship?

As far as I explored, it turns out that stability depends upon the design of the ship, especially the water plane area. This is the heaviest and widest part of the ship that’s usually found at the bottom or near the center.

This area is very important to keep the ship balanced, especially in rough seas. And if you have seasickness, it’s better to stay in the lower and central parts of the ship. Because these areas tend to feel less movement.

So, next time when you’re aboard, find a spot closer to the water plane area to make your cruise even more enjoyable.

Are Large Cruise Ships More Stable?

Yes, that’s true! When it comes to stability, the size of a large cruise ship does play a role. That’s because the world’s largest cruise ships, or giant cruise vessels, are designed in such a way that they stay stable. Actually, their massive structure and cruise ship stabilizers help them stay more stable in rough waters.

When Was the Last Time a Cruise Ship Tipped Over?

The last instance when a cruise ship tipped over was on 13 Jan 2012. Plus, in the previous ten decades, just 22 ships have been tipped so far.

This number shows the importance of the advanced systems onboard. For example, the ability to pump water from one side to another. This technology is key in maintaining the balance of the ship and prevents it from tipping.

So, there are just a few incidents in the past where a ship actually tipped. That’s why it’s evident that such matters are exceptionally rare. Why? Due to the cruise industry’s stringent safety measures and design innovations.​

How Shallow Can Cruise Ships Go?

The depth a cruise ship can travel in water depends on its density. Ships are designed to be less dense than water which allows them to float. The ship’s draft, which is the portion of the cruise ship underwater , must be considered along with water density to avoid grounding.

In short, the ability of the ship to navigate shallow areas is limited by these factors which makes sure that it remains afloat without touching the sea bottom in less dense water environments.

Bottom Line

So far in this blog, I’ve uncovered how these floating giants stay upright and navigate the seas. Cruise ships are designed with safety and stability in mind.

The blend of technology and design ensures that these vessels can face the vast oceans with confidence. This peek into their workings not only satisfies curiosity but also reassures us about the safety and ingenuity behind cruise travel.

Can a storm tip a cruise ship?

Cruise ships are designed to withstand storms thanks to advanced engineering and the rigorous safety standards of cruise lines, making tipping highly unlikely.

Can a cruise ship capsize in rough seas?

Modern cruise ships, like the Wonder of the Seas, are built to stay upright in rough seas, significantly reducing the risk of capsizing.

Could an iceberg sink a modern cruise ship?

The density of modern ships and their advanced navigation systems make it highly unlikely for an iceberg to sink a ship like today’s cruise vessels.

Can a whale tip over a cruise ship?

Considering the weight of the cargo and the massive size of cruise ships, a whale cannot tip over a cruise ship as the ship moves through the water.

Do cruise ships stop in the middle of the ocean?

Cruise ships may pause in the middle of the ocean if the volume of water or displaced water is equal to the weight of the ship, creating an opposing upward force, but they usually keep moving to their destination.

I am Zoe Grace, a passionate enthusiast of cruise ships. With a decade of firsthand experience in the cruising industry, I have developed a deep understanding of the intricacies and wonders that these majestic vessels hold.

Now, I am excited to embark on a new journey as an author, sharing my knowledge and insights with readers who share my fascination for the world of cruising.

Join me as we explore the captivating world of cruise ships together.

Similar Posts

Exploring at&t’s cruise package for the high seas is cellular at&t cruise package worth it, 6 best lake norman dinner cruises [don’t miss these cruises], best alaska cruise outfits & packing list for your voyage, cruise packing list: 24 must have items to pack for cruise, 21 free things to do on a cruise, how much does a cruise ship captains make in 2024.

how cruise ships stay upright

How do Cruise Ships Float? The Science Behind Cruising

15th February 2024

Have you ever wondered how cruise ships can float so effortlessly on the water despite their huge size and stature? With a combination of simple scientific theory and clever design techniques, cruise lines around the world have perfected their ability to launch ships of all sizes that can float and sail across seas, oceans and even rivers.

When you really think about it, though, it can seem unfathomable that ships as massive as the Royal Caribbean’s Icon of the Seas, weighing over a quarter of a million tonnes and taking the crown as the largest cruise ship in the world, can navigate through waterways without any problems. So how do they make it possible?

It’s no surprise that many people are left in awe of these feats of engineering. If you’ve ever wondered how cruise ships can offer amazing activities like rock climbing and ice skating, along with other amazing facilities, we’ve got you covered with our informative guide explaining everything from ship hulls to buoyancy. Whether you’re curious about how these massive ships stay afloat or any other aspect of their operations, our guide is here to help you out.

How do Cruise Ships Float? Buoyancy Explained

how do cruise ships float diagram

The reason that large cruise ships carrying hundreds of thousands of tonnes can float on water is largely down to physics. Put simply, cruise ships float because their mass is low in relation to the volume of water they’re sailing on. This creates an effect called buoyancy, which keeps the ship upright and afloat.

Cruise ships must be able to withstand the weight of the ship, the crew, luggage, supplies and passengers. This mass can total anywhere upwards of 65,000 tonnes. While this might seem like a lot, it’s nothing compared to the mass of water in the world. Cruise ships can displace the equivalent amount of water to their mass when they put pressure on the ocean, which pushes the ship upwards.

To keep afloat, the cruise ship must be able to displace its weight in water before being submerged. That’s a lot easier to do if the cruise ship is constructed in a way so that it’s less dense than the water below it. So how do cruise ship engineers achieve buoyancy during construction? The solution is simple – they choose lightweight, sturdy materials and disperse the weight of the ship across the hull, which we’ll explain in more detail later.

The History of Archimedes Principle

Archimedes is to thank for our understanding of buoyancy. Archimedes’ Principle states that any object totally or partially immersed in a fluid or liquid is buoyed up by a force equal to the weight of the fluid displaced by the object. So how did he find this out?

Archimedes came up with a unique idea to measure the volume of his body accurately against a body of water. As he sank into the water, it rose up and became displaced. From this experiment, he realised that if he could measure the amount of displaced water, he would be able to measure the volume of his body. The story goes that he also used this principle to find out if a goldsmith was cutting his gold with a less-dense metal like silver, but today his principle can be used to understand buoyancy.

Nassau, Bahamas- December 28,2021: The drone aerial view of Paradise Island and Nassau port, Bahamas.

For any object to float, the downward force of the object on the water should be less than the upward force of the water pushing back against the object. According to NASA, Archimedes’ principle states that the buoyant force, which is the difference in the upward and downward forces on an object in water, is equal to the weight of the water that the object displaces.

The easiest way to understand how it works is to imagine a toy boat in a bucket or bath filled with water. The volume of water being displaced by the object is tiny in comparison to the mass of water in the container, which allows it to float. Cruise ships work using this physics-based theory – only on a much larger scale.

Does this Work for Huge Cruise Ships?

Theoretically and practically, Archimedes’ Principle applies to huge cruise ships. While it’s true that the bigger the cruise ship, the more design and build considerations are needed to check that it will be buoyant when launched into the sea. But with the incredible engineers and technology available from shipbuilders, it isn’t a difficult task for them to create huge cruise ships with multiple restaurants, hundreds of staterooms, onboard theme parks, giant swimming pools and anything else they can think of.

How Much Water does a Cruise Ship need to Float?

Essentially, cruise ships can stay above the water as long as they can displace an equal amount of water to their mass. This means that most cruise ships are best suited to sailing around seas and oceans where there is more than enough water. Obviously, a cruise ship wouldn’t be able to sail on a small body of water that wouldn’t be able to displace the weight of a ship, which is why you won’t see any floating on smaller lakes.

This is why smaller cruise lines such as Fred. Olsen are perfect for meandering along rivers and reaching narrow port openings, while larger ships like much of Royal Caribbean’s fleet are best suited for transatlantic sailings. Their size is much more relative to the body of water they’re floating on, which means they can be propelled upwards and remain steady as they sail.

Small cruise ship in the waters of andaman sea with rocky island on background. At sunny day

Does the Design of a Cruise Ship Help?

Engineers and shipbuilders use their incredible knowledge of cruise ship design to make sure the ship can float and glide through the water with ease while also providing passengers with wonderful onboard experiences. So which design features do they pay the closest attention to?

The Ship’s Hull

The hull of a ship is not only important for stability, but it also provides protection for the entire ship. Fibreglass, composite materials, and even steel can be torn apart by reefs, sandbars, and icebergs as we all famously know from the Titanic. To prevent such catastrophic damage, shipbuilders make use of super-strength steel and insert double hulls (a hull inside a hull, technically speaking). This way, the hull can offer even more protection and give everybody peace of mind that the ship can remain stable and secure no matter what happens. Passengers on ships with these hull types rarely feel any rocking or side-to-side movement.

Shipbuilders will often construct a round-bottom displacement hull which has rounded edges to minimise the force of the water against the hull. This allows larger and heavier ships to sail smoothly. Unlike other hull types such as the v-hull which rises out of the water and skirts the waves, round-bottom hulls push through the water, making them extremely stable and seaworthy.

On the rare occasion that an unforeseen accident does happen, vertical watertight dividers called bulkheads are installed throughout the interior of the hull. These dividers keep damaged ships afloat by containing incoming water in one or two compartments, which means the cruise ship can continue its voyage without flooding and also with little to no effect on crew and passengers.

Ship Layout Design

The ship layout can also have a big impact on the centre of gravity, water displacement and mass. This is why you’ll find that cruise ships are designed to be bottom-heavy since this keeps the centre of gravity low and allows just enough of the ship to sit underwater and displace its mass accordingly through the seas and oceans. Storage facilities, water tanks, engine rooms and anything else requiring heavy materials will always sit on the lowest decks of a cruise ship, and these are often inaccessible to passengers because of health and safety.

Anything else – including staterooms, pools, restaurants, entertainment facilities and more – will be found on the higher decks of the ship. These are built with lightweight materials which helps with the ship’s centre of gravity. Plus, it means that the facilities are quicker and easier for passengers to access since they’re all on relatively similar decks, making it a win-win situation.

So there you have it – we hope you enjoyed our guide explaining the ins and outs of how cruise ships float. And if all this talk of cruise ships has left you yearning for a holiday at sea, be sure to check out our cruise deals .

Maritime Page

How Do Cruise Ships Stay Stable At Sea?

Ever wondered how a massive structure like a cruise ship doesn’t tip over even though having a huge volume outside of the water compared to what’s below the water?

So, the answer to this question is balancing the forces. Let’s say we have two main forces acting on the hull, one is the weight of the vessel that pushes it down and the second is the buoyancy force that acts on the bottom of the hull that pushes it up.

Cruise ship AIDAbella in the port of Kiel.

How Does A Cruise Ship Float?

When both forces balance with each other the vessel is stable and remains afloat. Now, these forces act on certain points in the ship called the center of gravity, where the weight acts, and the center of buoyancy, where the buoyancy or upward forces act on.

Now since all the heavy machinery on board like engines, generators, and so on are placed on the lower levels in the vessel compared to lighter materials which take up spaces like cabins, furniture, entertainment spaces, and so on, are mostly found on the upper levels or decks in a vessel, the center of gravity will be located towards the bottom half of the vessel.

Whereas the center of buoyancy is found to be acting below the water surface on the submerged section of the hull and is defined as the center of the waterplane area which is almost half of the submerged section.

Let’s suppose an external force like wind acts on the side of the vessel, the vessel tends to heel towards one side and while doing so the amount of body submerged inside the water also changes, bringing forward a shift in the center of buoyancy of the vessel whereas the center of gravity remains unchanged.

In stable conditions the center of gravity is aligned with the center of buoyancy in a single vertical plane, whereas in unstable conditions like the one described above, the center of gravity and center of buoyancy will be not aligned on the same plane which thereby causing a twisting moment which tends to bring back the vessel to its stable upright condition, once the wind is over.

Now if there is a shift of weight within the vessel, the center of gravity changes and again a twisting moment is produced if the center of gravity aligns with the center of buoyancy again the vessel remains stable but with an angle of heel, and this condition can be correct by balancing the weights on-board.

Ship stability is divided into, Intact stability and damaged stability. Intact stability determines the vessel’s ability to stay afloat in all operational and weather conditions. Whereas damage stability determines the vessel’s ability to stay afloat such that safe evacuation procedures can be carried out, during collision or grounding of the vessel.

Let’s get into the details to find out more.

How Are Cruise Ships Designed In Terms Of Stability?

The stability of a cruise ship is not only depends on its geometry but also on how the structures are arranged inside the vessel to help it stay afloat during undesired events such as flooding due to collision or grounding of the vessel.

In cases of flooding, water-tight compartments and water-tight bulkheads help in retaining water in specific spaces inside the vessel, thereby increasing the reserve buoyancy of the vessel and not causing it to spread throughout the vessel which can ultimately cause sinkage.

Looking back into history, one of the main reasons why the world’s biggest passenger ship , The Titanic sank was the absence of watertight bulkheads.

Classification Societies

All the new build designs are governed by a regulatory body called IACS (International Association of Classification Society), which has put forward a set of safety standards that must be met by the designer/builder during the entire shipbuilding process .

All vessels are designed so they operate in certain sea states and the standards have a high safety margin in terms of adverse weather conditions the vessel may ply through during her operational life. Also starting from the design stage till the final launching and sea trials there are regular class survey’s done by surveyors under the classification society to ensure the standards are maintained.

They also verify the structural strength and integrity of components of the hull to ensure the safe operation of the vessel. Also, periodical surveys are done to check if a vessel is properly maintained in compliance with class requirements throughout its operational life to ensure the overall safety of life on board the vessel.

Inclining Test

Near to completion of a vessel, an inclining test is carried out to assess the stability of the vessel. The primary aim of the experiment is to find the center of gravity, and the metacentric height (used as an indicator of stability), and further estimate the stability of the vessel.

This test involves shifting weights within the vessel so that the vessel’s heel is to one side, the corresponding heel angle is marked with help of devices such as a pendulum or stylograph, and computations are made to get the above-mentioned values and this is repeated for different heel angles.

The inclining test is not only done for new builds, but also for vessels that have undergone a huge change in their overall weight for example refit of the superstructure and so on.

Also, to abide by safety standards classification societies have brought forward a rule where all vessels must be weighed over a period of 5 years to ensure that the vessels are lightweight (that is the weight of the vessel without any cargo, fuel, passengers, and so on, onboard) haven’t changed.

If there’s a noticeable increase higher than 2% an inclining test must be done so as to assess the stability of the vessel because when there’s a change in lightweight the position of the center of gravity also changes which can affect the stability of the vessel.

Cruise Ship Stability Systems Onboard

Back in the day, vessels were stabilized by adding more weight/ballast on the lower sections so as an effort to bring down the values of the center of gravity. Not only does this add more weight overall but also required more power to push this weight, which thereby increased fuel consumption and reduces range.

Understanding this was not a feasible way forward, designers started thinking of other means by which they could achieve a more stable vessel and one of them was by improving the values of metacentric height.

The absence of a completely filled tank gave rise to the free surface effect which had a direct relation to metacentric height and methods were adapted to reduce this effect by compartmentalizing the tanks.

Again, the overall effects were observed to be very small and other systems were developed which proved to be more effective.

Degrees Of Freedom

A ship normally has a motion in 6 degrees of freedom out of which 3 are translational and 3 are rotational. The translational motions are, a surge which is the forward and aft motion of the ship, sway which is the port to starboard motion, and heave which is the up-down motion.

The rotational motions are roll, motion with respect to the longitudinal axis towards port and starboard, Pitch which is the motion about the transversal axis forward and aft, and yaw which is a swing motion about a vertical axis.

Stabilizer systems are used to dampen these motions which can lead to travel discomfort problems like seasickness for passengers and crew onboard the vessel.

Based on the source of energy utilized to stabilize a vessel, the systems can be divided into active and passive stabilizers. Passive stabilizers are those which may work utilizing energy from the ship’s motion and they can either be fixed or mobile whereas Active stabilizers are those which are linked to cruise ships’ internal means and require power to operate which can be either electrical or hydraulic.

Do Cruise Ships Have Stabilizers?

In order to reduce rolling at sea and improve the experience of passengers onboard, cruise ships are equipped with stabilizers. However, it is a more complex system and includes both passive and active stabilizers.

Passive Stabilizers:

  • Bilge Keels

Bilge keels are normally plates welded to the hull and are located in such a way that they create an obstacle to the water flow generated during roll motion, thereby producing a damping motion that reduces roll.

They are the most common stabilization systems used on most vessels and are effective at all speeds. Also, they do not require much maintenance as they are fixed structures.

  • Passive tanks

Passive tanks are tanks that are designed inside the vessel and they use ballast water to add and discharge weight as a means of counteracting the roll motion. If designed correctly, flow motions inside the tanks due to roll act as a damping force.

It is highly effective at slower speeds and since there is no additional structure protruding out of the vessel there are no additional drag forces created on the hull making it more efficient.

Active Stabilizers:

  • Fin stabilizer

Stabilizer fins are the most common active stabilizers. They are movable lifting surfaces and are free to rotate about an axis. Its motion is governed by sensors to counteract external forces.

  • Gyro stabilizer

A gyroscope is a device that has a wheel-shaped structure in a box that can spin at very high speeds about its own axis. They produce a moment that can oppose the external forces thereby stabilizing the entire vessels.

Some vessels use two or more stabilizers depending on the size of the vessel. They are effective at all speeds and also when the vessel is at rest.

The autopilot system uses electronic signals to control the rudder of the vessel. They can help the vessel keep a steady course without any other external forces acting on the vessel which could lead to a change in course.

They are used to stabilize the vertical motions in a vessel. They work in a similar manner to fin stabilizers and are usually retractable so as to reduce drag and also so that the vessel could easily maneuver through shallower water without the risk of grounding.

Is It Safe To Take My Family On A Cruise Ship?

Yes, it is totally safe to go out with your family to the sea and have a great time on a cruise ship, as modern vessels are designed and built in such a way, strictly adhering to all safety measures and protocols. They are also maintained and surveyed periodically to ensure the overall safety of life on board and also are equipped with the latest life-saving appliances such as boats and rafts for undesired events.

YouTube player

About the author

' src=

I worked as an officer in the deck department on various types of vessels, including oil and chemical tankers, LPG carriers, and even reefer and TSHD in the early years. Currently employed as Marine Surveyor carrying cargo, draft, bunker, and warranty survey.

Leave a Reply Cancel reply

Your email address will not be published. Required fields are marked *

Save my name, email, and website in this browser for the next time I comment.

Latest posts

What Are the Most Common Shipbuilding Woods?

What Are the Most Common Shipbuilding Woods?

While shipbuilders have switched to other practices, wood still has a place in the maritime industry. The numerous types available mean manufacturers have myriad options, so here’s a guide on shipbuilding woods.

Fiberglass vs. Steel: Which Is More Reliable?

Fiberglass vs. Steel: Which Is More Reliable?

Shipping professionals should get the most from their investment, so which is more reliable: steel vs. fiberglass? Here’s how to determine the better option.

What Does a Longshoreman Do?

What Does a Longshoreman Do?

Longshoremen play a critical role in the global supply chain, bringing billions worth of cargo into the country. So what does a longshoreman do exactly?

  • Search Please fill out this field.
  • Manage Your Subscription
  • Give a Gift Subscription
  • Sweepstakes

How Do Cruise Ships Float?

Hint: Magic has nothing to do with it.

Melanie Lieberman is the senior travel editor at The Points Guy and was an editor at Travel + Leisure.

how cruise ships stay upright

Not everything that's heavy sinks right to the bottom of the ocean floor, and there's no greater proof than Royal Caribbean's Wonder of the Seas, the biggest cruise ship on Earth.

The world's largest cruise ship boasts 21 restaurants, 14 bars, three water slides, a mini golf course, and more, all contributing to the 236,857 tons it weighs. And that's without the 7,000 passengers it can hold.

We know that giant ocean liners don't sink, even with their rock climbing walls, nightclubs, and full-blown waterparks. But have you ever wondered why?

It's not magic or flying unicorns that keep the Wonder of the Seas plying the open waters. It's all about buoyancy: the power of a liquid to keep things afloat.

Colossal vessels stay above water by displacing an amount of water equal to their mass (the wide, U-shaped hull helps with this). As the ship moves forward and pushes water away, the water is ceaselessly trying to return to fill the space, with an energy that forces the ship upward.

And it's not just about total weight. A solid bar of steel dropped from a cruise ship balcony will undoubtedly sink until it reaches the bottom of the sea. But a boat actually has a lot of open space. No matter how many restaurants, bars, swimming pools, and casinos they cram into these floating cities, there's still an awful lot of empty volume.

Engineers are careful to keep the average density of a ship (considering both the physical weight of the vessel as well as all the air) less than the average density of the water. After all, the ocean is massive — and extremely dense. To the seas, a cruise ship is nothing more than a leaf drifting effortlessly along the surface.

So don't spend any time stressing about this one. Your ship is an engineering (and entertainment) marvel. Just sit back and enjoy the cruise .

Cruise Vacation HQ

How Do Cruise Ships Float?

A single cruise ship carries thousands of people, and some of them weigh over 200,000 GT (gross tonnage). Having such a hefty weight and size to hold enough people for a small town, how do luxury liners stay afloat? Cruise ships can sail the waters thanks to their designs, which manipulate the physical principle of buoyancy.

Let’s go a little deeper and discover how objects like cruise ships manage to float. Aspects of their design, safety features, and other parts work with buoyancy to keep them upright even through the waves. 

Cruise ships float by exploiting the physics rule called Archimedes’ principle . In simple terms, the law states that objects must weigh as much as the water they displace to float. If they weigh more or are denser than the water they displace, the objects will sink.

Ships push on the ocean’s surface when they sail, but to float with Archimedes’ principle, they must displace quite a lot. A ship must have the right shape. Condensed items like balls and small weights sink because they do not push out much water. However, wide-pointed objects like a ship’s hull do it well.

When water displaces, it tries to reclaim the areas it’s pushed out of, from outside and below. When the force of the liquid pushing back equals the force of gravity caused by the ship’s weight in water, a cruise liner stays perfectly afloat.

Cruise ships have plenty of mass to balance. To certify the heavy ship stays buoyant architects employ many designs that help counter gravity and displace as much water as possible.

Cruise Ship Design Features Supporting Buoyancy

How do cruise ships displace enough water to float? The design of the hull holds the secret.

The most common modern cruise ships have U-shaped hulls. For water displacement to be successful, the hull must be denser than water, which is why engineers use extra-strength steel alloys. Steel is one of the only materials sturdy and light enough to supplant water without too much mass.F

Lastly, the upper portions of cruise ships need careful design, too. To float, the liner’s cabins and other facilities must be able to trap air. Since air is less dense than water, it becomes an additional aid for buoyancy. The upper portions of the cruise must also use lightweight materials to minimize the force of gravity pulling the boat downward.

Safety Features

Beyond the physics, cruise ships have a few safety features that aid in floating, particularly in emergencies. If an iceberg, rock, another boat, or large debris pierces the hull, there must be a contingency plan. That’s why most cruise ships adopt a double hull design where one floater rests inside the other, serving as a backup if the outer piece punctures.

Similarly, bulkheads keep a ship’s hull compartmentalized. Bulkheads are watertight, thick, sealed chambers that ship workers can open and close at will. If part of the hull punctures, sailors can close the flooding bulkheads to prevent water from filling up the rest of the cruise ship.

Why Don’t Cruise Ships Tip Over?

Even on wavy waters, the largest cruise ship won’t flip over. There are three reasons this happens: the ship’s center of gravity, its center of buoyancy, and its technology.

Cruise ships and other heavy boats have hulls with low centers of gravity. Much of the liner’s machinery, such as pumps and boilers, rests at the bottom of the vessel. The weight adds to the force of gravity pulling down on the cruise ship, bringing the center of gravity lower and increasing the boat’s stability.

Secondly, cruise ship hulls have varying centers of buoyancy by design. Each comes with a centerline, usually resting flat underwater. If the wind or other forces push on the cruise and it tilts, the hull’s design shifts the boat’s center of buoyancy back beyond the centerline. Therefore, the cruise hull’s design brings it back to the upright position when it begins to tilt one way or the other.

Lastly, technologies on cruise ships regulate their balance. Ballast tanks and anti-heeling systems are pump-based regulators found near the ship’s hull. When the boat is swaying or tilting, operators use them to pump seawater from one side of the hull to the other. The force of releasing that water helps to balance the boat when it leans or sways.

Most modern cruise ships also have objects called stabilizing fins attached to the hull. They help the boat maintain a forward direction and a steady center of gravity.

A combination of natural physics and human engineering allows us to experience giant cruising vessels. The science of the modern cruise ship’s U-shaped hull balances the force of gravity above and the push of the waters below. Now that you know how cruise ships float, you can marvel at the feat of engineering while you relax as a passenger on the deck.

how cruise ships stay upright

Bermuda Cruise Port Guide

Planning your cruise to Bermuda and trying to figure out what to expect at the port? There are multiple ports in Bermuda for cruise ships to dock: King’s Wharf and Heritage Wharf are both located in the Royal Naval Dockyard on Ireland Island North at the western tip of the Great Sound (the busiest cruise …

how cruise ships stay upright

How Much Is a Disney Cruise?

The happiest place on Earth brings smiles to the seas with all the amenities offered on a Disney Cruise vacation. Between the pools, spa, shows, entertainment, and dining options, a Disney Cruise is a vacation with something for everyone. If you’re considering a Disney Cruise vacation, you’re likely wondering, “how much is a Disney Cruise?” …

how cruise ships stay upright

How Much Does an Antarctica Cruise Cost?

For many people, seeing Antarctica is a dream come true and the trip of a lifetime. The best way to experience it is by taking a cruise. Flying requires expensive charter flights with expert pilots, but cruises let you make multiple stops. Generally, a cruise to Antarctica typically costs at least $10,000 per person. Still, …

how cruise ships stay upright

About Fred Dean

I've been cruising for 15 years, and I can't get enough.

Leave a Comment Cancel reply

Save my name, email, and website in this browser for the next time I comment.

Cruise Ship Traveller

Can a Cruise Ship Tip Over? (What Stops Them?)

Modern-day cruise ships are enormous, with many having 15 decks or more; some are like high-rise buildings on the sea.

So it’s not surprising that some people wonder how they do not tip over, especially in some of the rough seas they inevitably encounter.

So let’s look at the critical design elements that keep a cruise ship upright and stop it from tipping over.

Can a Cruise Ship Tip Over?

While it is not impossible, It is extremely unlikely for a cruise ship to tip over even if it encounters some of the roughest seas on earth.  

Cruise ships of all sizes are designed to withstand rough sea conditions and large waves, which, while they may significantly roll the ship from side to side, will not typically be anywhere near strong enough to cause the ship to keel over.

A rogue wave might be the most significant potential threat to rolling a cruise ship over.  However, the chances of these occurring are very remote, let alone being in the vicinity of a cruise ship, although rogue waves have hit cruise ships before, and in each recorded instance, they survived.

Cruise ship and rogue wave

In addition to all the design elements that keep a cruise ship upright and stable, there are also actions the cruise captain and accompanying crew can take to offset any adverse weather and sea conditions.  

For example, the captain can adjust the weight distribution within the ship to offset the effects of the sea conditions.  

How Do Cruise Ships Not Tip Over?

Cruise ships can roll to nearly 60 degrees before it’s likely to tip over.

Cruise ships are built to withstand the roughest seas and large waves up to 50 feet high, which would be way higher than the average expected in a stormy sea.  However, some rogue waves have been known to exceed 50ft.

By design cruise, ships go under numerous tests under small-scale model conditions.  They are tested for the most extreme weather events they might encounter, including hurricanes and rough seas, and even much rarer rogue wave scenarios. 

Queen Mary 2 Ocean liner

In the days of the Titanic cruise ship (actually an ocean liner), ships were smaller and sleeker in design.  In those days, they were built for speed in the roughest of seas for crossing the likes of the Atlantic with passengers and cargo.

Whereas modern-day cruise ships are built purely for leisurely purposes.   The more decks and the higher the cruise ships can be created, the more paying passengers and facilities they can fit on board and ultimately make more money.

But the higher they are built, the more likely they look to tip over, especially when you know they are top-heavy with swimming pools, some with a couple of hundred tonnes of water.  

Tipping seems even more likely when you realize only a relatively small portion of the cruise ship is underwater, typically only about 10% of its total height.

Not only do cruise ships have to carry the huge weight of the ship, but they also carry the weight of all the fittings, furnishings, facilities, passengers, and all their luggage.

Several design factors come into play in keeping cruise ships upright and in the event of rolling, ensuring they roll.

We cover each of them below.

Low Center of Gravity

Having a low center of gravity makes its much more difficult for an object to be tipped over.

Although modern-day cruise ships look very top-heavy, most of the weight is distributed in the bottom of the ship and lower decks..

The hull is surrounded by a hull made of dense steel which holds the heavy mechanical machinery of the ship, including the engine room, air condition units, generators, as well food storage, luggage, and much more.

The upper half of the ship is much less dense, and much of the superstructure of the ship is made of aluminum which is lighter than the steel needed below for a strong hull.

One exception on the higher decks is the significant weight of water in the swimming pools, most often on the higher decks of a cruise ship, which raises the center of gravity higher up the ship.  These can however be emptied if required.

The center of gravity of a cruise ship can be controlled by increasing or decreasing the weight of the ship.  

The Cruise captain and navigation crew have several options for adjusting the weight of the ship, including:

  • Ballast tank water levels
  • Fuel levels
  • Onboard swimming pool levels

Center of Buoyancy

We have covered the importance of buoyancy in how a cruise ships float . 

When it comes to whether a cruise ship can tip over its the center of buoyancy that is more relevant.

The center of buoyancy is the center of the cruise ship underwater . 

When a ship is tilted to one side  due to an external force (wind or waves) more of the ship goes underwater which in turn moves the center of buoyancy towards the center of the larger area of the ship underwater.

With the center of gravity pulling down from its original position and the center of buoyancy pulling up from its changed position with more of the ship beneath the water creates a force which pushes the ship back to its upright position until the center of gravity and center of buoyancy are back in line.

The center of buoyancy is very illustrated in the video below:

The above video also explains how an internal force can cause a ship to tip to one side, although in reality on a cruise ship there wouldn’t be enough weight onboard to make much a difference, even if everyone on board moved over to one side. 

Even if they did the ship would automatically adjust the weight on board through other means such as ballast tanks.

Wide U-Shaped Hull

Wide U Shaped Hull of Cruise ship

Cruise ships have large rounded U-shaped hulls, which make the ship more stable and reduce any rocking motions it may experience in rough seas compared to V-shaped ships.

The width of some cruise ships is nearly as wide as they are tall above the waterline. This also keeps the ship stable when being hit by strong winds from the side.

A Wide U-hull also helps reduce any rocking motions the passengers may feel and contributes to a more pleasant sailing experience.

The slight disadvantage is that cruise ships are slower-moving than faster-moving V-shaped ships.

Ballast Tanks

Ballast tanks are large tanks within the hull of the cruise ship.  They can be filled with water to increase the vessel’s weight and lower its center of gravity .   The larger the cruise ship, the more ballast tanks they are likely to have.

Alternatively, if required, the water can be released and replaced with air to lighten the ship’s weight.

Ballast tanks are what submarines use to sink in the water. If they release the water, the tanks fill with air, and the submarine rises.  

Bilge Keels

Bilge keels look like two fin-like structures running along the center of the cruise ship’s hull for about two-thirds of its length.  

The purpose of bilge keels is to dampen the ship’s tendency to roll by adding resistance to the water as the ship rolls.

Although they look relatively small on a huge cruise ship, the forces on them cause a significant movement to oppose the rolling.

What If a Cruise Ship is Damaged? 

Although accidents are rare, they can happen.  For this reason, many cruise ships have double hulls, which is, as it sounds, one hull built within another.  

Therefore if the outer hull is damaged, the inner hull should maintain a water-tight seal.

In the instance of significant damage, cruise ships have bulkheads that can assist in keeping the ship afloat.

A bulkhead is a watertight division built with the cruise ship’s structure.  These can limit the spread of water flooding from one division to another on either side, thereby containing any flooding from hull damage to a limited area and reducing the weight the ship can take on.

Cruise Ship Nearly Tipping Over

Video footage of cruise ships nearly tipping over is rare because the event itself is rare.

However, on 26th January 2005, footage was captured of a mid-sized cruise ship, the MV Explorer,  tipping heavily from side to side.

This was due to a freak occurrence of the ship being hit by a 50ft rogue wave whole being caught up in a combination of three storms!  

The mid-sized cruise ship, which could carry over 800 passengers, was carrying approximately 700 students.  

As the rogue wave hit, it smashed windows on the bridge , which shorted out the ship’s navigational systems, and two of the main engines died.

The cruise ship had lost propulsion and was at the mercy of the waves, and was mercily rolling back and forth.

The cruise ship tipping ship was caught on camera, as shown in the video below.

However even in these extraordinary circumstances did not tip over and ship survived.  It has since been renamed MV Glory Sea .

The event, including some live footage from inside the ship, was also captured and featured in a mini-documentary by the Weather Channel, which can be seen on Youtube here if you’re interested.

How Do Cruise Ships Stay Upright?

 Carninval Freedome cruise ship

A cruise ship is designed with a wide U-shaped hull acting as a stable base.  

In the event of rough seas or high winds causing the ship to tilt from side to side past its centerline is known as rolling.  It’s this movement that can lead to the feeling of seasickness.

Cruise ships can use ballast tanks in the hull to combat this rolling and stabilize fins beneath the water.  

The ballast tanks are controlled automatically by anti-heeling systems , which have sensors that send signals of the ship’s angle in retaliation to its upright position and transfer water from the heeled side to the other side of the cruise ship returning the ship to its upright position.

All these features combined make any motion on a cruise ship barely noticeable most of the time.  

Let alone be bad enough for the ship to tip noticeable to one side or the other.

Frequently Asked Questions

Has crew ship tipped over.

There have been cases of cruise ships tipping over and even sinking . However, these are due to accidents such as the most recent and well-known modern example of the Costa Concordia, which hit a reef before tipping over.

The impact of the reef severely damaged the ship letting large amounts of water onboard.

Can A Whale Tip Over A Cruise Ship?

A whale could not tip over a cruise ship.  Although even the largest of blue whales can weigh up to 200 tonnes, the largest cruise ships can weigh up to 220,000 or more.

Some cruise ships would carry ten times more freshwater or fuel than the weight of even the largest whales.

Any impact would be more of a knock.  If a smaller or midsize cruise were knocked off its center of buoyancy, it would immediately right itself, roll back to its upright position.

What Would Happen If All The Passengers Went To One Side Of The Ship?

The bulk of the weight of a cruise ship is in the lower decks.  This can amount to thousands of tonnes if you include all the engines and machinery combined with water and fuel tanks alone on large cruise ships totaling thousands of tonnes.

So if everybody onboard went to one side of the ship, it would still not amount to enough weight to noticeably ship the ship’s center of gravity.

Even if the impact did affect the angle of the ship, the affected ship’s sensors would detect the change and adjust the ballast tanks accordingly.

So if this is ever a fear of yours, there’s nothing to worry about. 

If you have any fear of a cruise ship tipping over while at sea, hopefully, this post has put your mind at rest.  

Cruise ships are designed to withstand the roughest of sea conditions. Although modern mega cruise ships look tall and top heavy, they have huge amounts of weight in the lower decks, making them almost impossible to keel over when facing even the roughest of seas.

Related Posts

What is a Ship Draft

What is the Draft of a Cruise Ship? (and Why Does it Matter?)

Hoe many doors on a cruise ship

How Many Doors on a Cruise Ship? (Yes, I Counted)

Leave a comment cancel reply.

Your email address will not be published. Required fields are marked *

Save my name, email, and website in this browser for the next time I comment.

The Interesting Way Cruise Ships Float Even Though They're So Heavy

Cruise ship on the ocean

Traveling the ocean aboard a cruise ship is a great time for contemplation, but something few may consider is how they stay afloat, which is an important question when they are getting bigger all of the time. The Royal Caribbean's Icon of the Seas, for example, is the biggest cruise ship in the world and is due to set sail in January 2024. It is 365 meters long, with 20 decks, and weighs 250,800 gross tonnes. On top of all that, it houses the largest waterpark in the sea.

It is hard to believe that these floating cities stay upright, but it's actually just simple science that answers the question of how cruise ships float. The volume of liquid that they displace is the same as their mass so as they move through the ocean, the water tries to fill the space. This energy keeps it in motion. It is clearly a design that works, as it is uncommon for a cruise ship to sink.

How cruise ships avoid sinking

In the 32 years between 1980 and 2012, only 16 cruise ships have sunk. It is more common for them to run aground, which has happened to 98 leisure liners from 1972 to 2011, an average of 2-3 per year. Cruise ships can also get stranded due to issues like engine problems, which is when passengers need to be rescued. These are some reasons why some people may never take a cruise . However, there are numerous safety protocols in place to prevent it.

As sea conditions are one of the biggest worries for cruise captains, they use dedicated weather-routing technologies to track them. This data updates regularly, so if there are big waves, a liner may dock or avoid a certain port to keep everyone aboard safe. Another essential design feature that keeps the ship upright is storing all the heavy machinery and water supplies in the bottom section of the boat. The top of the ship is built as openly as possible to let wind pass through without tipping it over. Nonetheless, despite all these safety features, cruise ships do sometimes sink.

How cruise ships do sink

Most people know of the famous Titanic sinking in 1912 when it famously hit an iceberg. Since then, vessels may have become safer, but certain things can still sink them. A recent cruise ship to sink was the Costa Concordia in 2012 after hitting rocks that pierced its hull. It killed 32 people, and the captain was found guilty of manslaughter. Before that, the MS Sea Diamond hit a reef in Santorini in 2007 and later sank. Despite a rescue mission, two people went missing, presumed to have drowned.

One of the worst cruise ship disasters of the 20th century was when the Estonia sank in the Baltic Sea. A technical problem with the bow visor lock meant that it let in water, and 852 people died when it went down. That said, it takes a lot to bring down a cruise ship, but when it lets in water, it can have horrendous consequences. Thankfully, most cruise liners depart and return daily without a hitch, so these accidents will hopefully become rarer as safety technology and procedures improve.

Short vs. long cruises: Which one is right for you? Here's how they compare.

how cruise ships stay upright

Whether you want a weekend getaway or to max out your vacation days, there’s a cruise for that.

Cruise lines offer itineraries ranging from a few days to monthslong . But there are more differences between short and long sailings than just the amount of time guests spend on board. The length of a cruise can help dictate the types of ports passengers visit, the kind of ship they’re sailing on and even the general vibe on board.

“It's important to walk our guests through and for cruisers to think about, what's the experience that they're trying to have,” said Jamie Margolis, owner of Moms at Sea Travel, a Dream Vacations franchise. “So, we try to tease out that information, like, ‘What's your vacation style?’ ”

What can guests expect from short cruises?

Cruises can be divided into those shorter or longer than a week, according to Jared Feldman, owner of travel agency Jafeldma Travel. “So, anything less than that is really considered a short cruise,” he said.

Those around three nights long are often aimed at new-to-cruise guests “who aren’t really ready to commit to seven days but really want to quote-unquote test the waters, let's say – to see if cruising is right for them,” he added.

Those sailings typically feature just one port and a sea day and often visit tried-and-true cruise destinations. Travelers sailing from South Florida ports like Miami and Fort Lauderdale will likely visit Nassau in the Bahamas or one of many cruise line private islands , for example. While those sailing from Galveston, Texas, can expect to stop in Cozumel.

Margolis called three-and-four-night voyages a “great intro to cruising,” albeit with more limited itinerary choices. “Is their dream to go to Saint Kitts? They're probably not going to find that on a short sailing,” she said.

Shorter cruises may also lend themselves more to a party atmosphere and be less kid-friendly. But Margolis noted that’s not unique to cruising. “I mean, it's the nature of travel that short weekends can be celebratory,” she said.

And with diverse onboard offerings – from ship-within-a-ship concepts to kids clubs – passengers can often carve out their own experience.

Cruise lines have new offerings in that shorter category. Celebrity Cruises is launching its first regular weekend itineraries in the Caribbean this month, and Royal Caribbean International’s Utopia of the Seas will offer three-and-four-night sailings when it debuts in July.

What can guests expect from long cruises?

Feldman said any sailing over seven days could be considered a “longer cruise.” Those can range from around 10 days to more than six months. Royal Caribbean is operating a nine-month world cruise to more than 60 countries.

While short cruises “can feel like a bit of a whirlwind,” according to Margolis, longer itineraries offer more time to explore a greater variety of ports. They may feature less-visited destinations such as Aruba and Curaçao and often take place on smaller, older vessels (though ships are refurbished regularly).

That’s partly due to the limitations in places they stop. “Some of the ports … cannot really accommodate this large ship hardware,” Feldman said. “So, you need a smaller-size ship to navigate in and out of these ports.”

The onboard demographic also tends to skew older on those cruises since retired passengers typically have more free time, and travelers with kids are often beholden to school schedules.

If you want a middle ground, though, Margolis said a seven-night cruise “really takes you through what I think is, like, the whole cruise cycle.”

"You get on, you get acclimated, you find all the different amenities, and then you're able to … truly relax, disconnect, unwind,” she said. ‘And then you know, midweek, you start getting your luggage tags, and you go through that mental process of accepting that you're going to have to get off in a couple of days and go back to work.”

At that length, it's also easier to tack on a bit of extra time on the front or back end of the sailing to explore on their own, Feldman added.

Are short or long sailings cheaper?

Because short sailings frequently take place on larger ships, they are “very attractively priced” to help fill the cabins. But that doesn’t mean they’ll always be cheaper than a longer cruise.

A cruise with more stops will have higher port fees, but passengers may book longer itineraries further out and get better fares.

Looking for cheap cruises?: Here's what to know know about finding deals.

“Most times, you're not going to book a three-to-four-night sailing 12 to 18 months in advance,” said Feldman. “You're going to book that much closer in.”

The ship’s age also plays a role in how it’s priced, with shiny new vessels commanding higher rates . “So, there's a lot of different variables in play that kind of dictate where you're going to come out ahead or how much your cruise is ultimately going to cost based on those factors,” said Feldman.

Nathan Diller is a consumer travel reporter for USA TODAY based in Nashville. You can reach him at [email protected].

how cruise ships stay upright

Already planning to see the next solar eclipse in 2026? What travelers need to know.

Umbraphiles feeling the post-eclipse blues should start checking the expiration date on their passports.

The next total solar eclipse is set to happen on Aug. 12, 2026, over Greenland, Iceland, Spain, Russia and a small part of Portugal, according to NASA . 

In North America, only a partial eclipse will be visible, so if April’s event made you an eclipse chaser and you want to see totality, you’ll need to head overseas.

Start the day smarter. Get all the news you need in your inbox each morning.

Here’s what you’ll need to know before packing your bags:

Do you need a passport or visa for the best destination?

The path of totality for the 2026 eclipse mostly goes through places Americans can travel visa-free with their passport, so long as they’re planning to stay for less than 90 days.

Spain, Portugal, Iceland and Greenland all allow visa-free tourist travel for U.S. passport holders.

Spain, Portugal and Iceland are also members of the Schengen Area, which allows for visa-free travel in much of Europe, meaning if you decide to make a multi-country trip out of your eclipse adventure, you won’t need to clear customs if you’re coming from much of the rest of Europe, either.

One major change for travelers to Europe from the U.S., however, is that electronic preauthorization will become a requirement beginning in mid-2025. The European Travel Information and Authorization System (ETIAS) requirement will apply to all four open countries in the path of totality. 

Depending on the state of the Ukraine war, travel to Russia may or may not be an option for most Americans by 2026, so it’s unclear what the paperwork requirements will be by then.

Is it better to see it from the beach?

Beaches can be a great place to see the eclipse because there are few natural obstacles blocking observers’ views of the sky. The 2026 path of totality passes over beaches on Spain’s northern and southeastern coasts, as well as over islands in the Mediterranean Sea including Mallorca, Menorca and Ibiza. The eclipse will also pass over coastal areas in Greenland and Iceland, according to the National Solar Observatory . 

Cruising Altitude: What it was like to see the eclipse from a plane

Will there be eclipse cruises or flights?

Almost certainly, although most operators have not announced specific plans yet. 

Cruise lines will also offer more viewing opportunities. Princess Cruises “has created a bespoke itinerary aboard Sky Princess to position the ship near Spain on that date,” according to a spokesperson for the line. The cruise will open for bookings on Princess’s website on May 23.

Cunard Line has sailings on its Queen Mary 2 , Queen Victoria and Queen Anne vessels that will put passengers in prime spots to watch .

'The ship can move': Why you should watch next solar eclipses from a cruise ship

Holland America Line is also planning multiple sailings around the event, though details are still to be announced. “Guests have reacted positively to our 2024 eclipse cruises and with the next full eclipse in 2026 we plan to have three sailings in Europe that will align with the path of the eclipse,” Paul Grigsby, the line's vice president of Deployment & Itinerary Planning, previously told USA TODAY in an email.

This article originally appeared on USA TODAY: Already planning to see the next solar eclipse in 2026? What travelers need to know.

April 8: Players for the Cleveland Guardians watch a total solar eclipse before a game against the Chicago White Sox at Progressive Field.

IMAGES

  1. That's How Cruise Ships Can Stay Upright in Any Weather

    how cruise ships stay upright

  2. Why don't cruise ships tip over?

    how cruise ships stay upright

  3. Costa Concordia cruise liner set upright

    how cruise ships stay upright

  4. How Does A Cruise Ship Stay Upright

    how cruise ships stay upright

  5. How Do Cruise Ships Stay Upright

    how cruise ships stay upright

  6. How Do Cruise Ships Stay Stable

    how cruise ships stay upright

VIDEO

  1. Why don't cruise ships stay overnight?

  2. How do ships stay on the water's surface?

  3. Costa Concordia: watch the time lapse video

  4. Trying to upright capsized fishing boat

  5. समंदर में क्यों नहीं डूबते ये बड़े बड़े क्रूज़ जहाज़! Why Cruise Ships don't sink?

  6. life an extravagance lifestyle Inside the world's most luxurious cruise ships

COMMENTS

  1. How Does A Cruise Ship Stay Upright

    To understand how a cruise ship stays upright, we must first explore the basic principles of stability. At its core, stability refers to the ability of a ship to maintain its equilibrium and resist capsizing or rolling over in the water. The stability of a cruise ship is determined by two main factors: its center of gravity (CG) and its center ...

  2. Secrets Of Cruise Ship Stability: Unlocking The Science Behind Upright

    Cruise ships stay afloat by having an average density less than that of air. The ship's center of gravity is lower due to heavier machinery and fuel stores. The round-bottom hull shape helps the ship move smoothly through the water and increases stability. Ballast tanks allow for adjustments in stability during rough seas.

  3. Ship Buoyancy and Stability: How Ships Float and Stay Upright

    A ship floats because the submersed part of it is lighter than the displaced water, and the total weight of the ship equals the total weight of the water it displaces. Forces of gravity and buoyancy on a ship in water. However, it is not enough for a ship to simply float in a static state. It also needs to stay upright while sailing through the ...

  4. Why don't cruise ships tip over?

    The weight is balanced by the buoyancy, which is pushing it up. And if the buoyancy is greater than the weight, the ship would continue to move upwards. But to work out why the ship doesn't tip over, we need to think about where exactly these forces are acting. Those points are the center of gravity for the weight, and the center of buoyancy ...

  5. Cruise Ship Stabilizers: How Do They Work!

    Cruise ships stay upright and provide maximum comfort, all possible due to stabilizers. On either side of the ship, fin stabilizers minimize the rolling motion and provide a comfortable voyage. Most modern cruises use active curved fins that reduce the ship's roll without impacting the speed and fuel consumption.

  6. How Do Massive Cruise Ships Float?

    In this episode of Explainers, we explore the science behind how gigantic cruise ships stay afloat.Subscribe to Travel + Leisure! - http://www.youtube.com/us...

  7. How Does A Cruise Ship Float? Understanding The Principles Of Buoyancy

    Maintaining stability is essential for a cruise ship to stay afloat. The stability of a ship refers to its ability to maintain an upright floating position in still waters or to right itself up again in rough waters. The center of gravity is a critical factor in maintaining stability. It is the point at which the weight of the ship is concentrated.

  8. How Does Cruise Ship Stay Upright?

    Cruise ships are some of the largest vessels ever to navigate the open seas. With thousands of passengers and crew, these massive ships can appear to be an ungainly giant on the water. But how does a cruise ship remain upright in spite of its immense size? The answer lies in the engineering and design of the vessel itself.

  9. How do cruise ships float?

    Cruise ships (and other large vessels) usually have displacement hulls, or hulls that push water out of the way, to stay afloat. Another major difference between a cruise ship and a boat is the design of the hull. Boats have a "v-hull", which means if you took it out of the water and looked underneath, the bottom resembles the letter "v".

  10. How Do Cruise Ships Stay Upright

    Have you ever wondered how cruise ships defy gravity and stay upright, even in the face of turbulent waves and powerful winds? Well, let me take you on a journey behind the scenes of these magnificent vessels. It's fascinating to discover the intricate systems and engineering marvels that contribute to their stability. Firstly, a cruise […]

  11. Ship stability

    Ship stability. Ship stability is an area of naval architecture and ship design that deals with how a ship behaves at sea, both in still water and in waves, whether intact or damaged. Stability calculations focus on centers of gravity, centers of buoyancy, the metacenters of vessels, and on how these interact.

  12. WHY DON'T CRUISE SHIPS TIP OVER?

    Join our Exclusive Community over on Patreon: https://www.patreon.com/CasualNavigationWhat keeps ships from toppling over? I explain how Cruise ships stay up...

  13. How Do Cruise Ships Float?

    Surrounding fluid will push back with a force that is equal to the displaced amount. When the two forces are equal, the object will float. In other words, while a cruise ship rests in water, it ...

  14. That's How Cruise Ships Can Stay Upright in Any Weather

    A majestic snow-white cruise ship looks like a piece of art. It's a city in itself, with cafes, stores, swimming pools, gyms, and a water park. Everything, f...

  15. How Do Cruise Ships Float And Not Tip Over? (Explained)

    I did some research and personally talked to an engineer to find out how do cruise ships float and not tip over. Here are the mind-boggling secrets...

  16. How do Cruise Ships Float? The Science Behind Cruising

    Put simply, cruise ships float because their mass is low in relation to the volume of water they're sailing on. This creates an effect called buoyancy, which keeps the ship upright and afloat. Cruise ships must be able to withstand the weight of the ship, the crew, luggage, supplies and passengers. This mass can total anywhere upwards of ...

  17. How Does a Cruise Ship Stay Stable?

    Another way cruise ships stay steady is by using fins or stabilizers, which are small wings that extend from near the bottom of the ship. These fins act like a keel, providing additional lift to counterbalance any waves or wind pushing against the ship. Some ships even have movable fins which can be adjusted to maintain optimal levels of stability.

  18. How Do Cruise Ships Stay Stable At Sea?

    When both forces balance with each other the vessel is stable and remains afloat. Now, these forces act on certain points in the ship called the center of gravity, where the weight acts, and the center of buoyancy, where the buoyancy or upward forces act on. Now since all the heavy machinery on board like engines, generators, and so on are ...

  19. How Cruise Ships Float

    Colossal vessels stay above water by displacing an amount of water equal to their mass (the wide, U-shaped hull helps with this). As the ship moves forward and pushes water away, the water is ...

  20. How Do Cruise Ships Float?

    Cruise ships and other heavy boats have hulls with low centers of gravity. Much of the liner's machinery, such as pumps and boilers, rests at the bottom of the vessel. The weight adds to the force of gravity pulling down on the cruise ship, bringing the center of gravity lower and increasing the boat's stability. Secondly, cruise ship hulls ...

  21. Can a Cruise Ship Tip Over? (What Stops Them?)

    A whale could not tip over a cruise ship. Although even the largest of blue whales can weigh up to 200 tonnes, the largest cruise ships can weigh up to 220,000 or more. Some cruise ships would carry ten times more freshwater or fuel than the weight of even the largest whales. Any impact would be more of a knock.

  22. The Interesting Way Cruise Ships Float Even Though They're So Heavy

    Traveling the ocean aboard a cruise ship is a great time for contemplation, but something few may consider is how they stay afloat, which is an important question when they are getting bigger all of the time. The Royal Caribbean's Icon of the Seas, for example, is the biggest cruise ship in the world and is due to set sail in January 2024. It ...

  23. What stops giant cruise ships toppling over in rough seas?

    A week ago, 2 of the most gigantic cruise ships in the world docked near my city. If you have seen one, or been on one, you will know how large they are. ... The have to stay upright even with dead engines. If the integral of the lever below the water line is bigger than above then it should stay upright. Ballast at the bottom goes a long way ...

  24. A Heroes Cruise: A Guest Poem

    Time to put our lives on cruise, if you'll please pardon the pun. So we booked us some cruises to see the great U.S., To be treated just like royalty as American Cruise Lines' guests. It is all we expected, the food is divine. The staff is amazing, so supportive, so kind. The sights are spectacular, really what dreams are made of,

  25. Short vs long cruises: Here's how they compare

    Cruise lines offer itineraries ranging from a few days to monthslong. But there are more differences between short and long sailings than just the amount of time guests spend on board.

  26. Already planning to see the next solar eclipse in 2026? What ...

    Princess Cruises "has created a bespoke itinerary aboard Sky Princess to position the ship near Spain on that date," according to a spokesperson for the line. The cruise will open for bookings ...