sea voyage time calculator

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SEA DISTANCES / PORT DISTANCES - online tool for calculation distances between sea ports.

More than 4.000.000 distances

More than 4000 sea ports.

Sea route & distance

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Distance: nautical miles

time at sea

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• Sailing Distance Calculator

Welcome to Public Searoutes

Choose the waypoints for your journey and calculate your most efficient sea routes free of cost .

Comprehensive Information

Free Route Planning

We provide you with more than just a suggested route. Public Searoutes includes essential details such as:

This project is made possible by public data sources and open source software. Read our case study →

Plan faster

A better workflow

Public Searoutes is designed to streamline your sea route planning process. Our intuitive interface allows you to quickly and easily input your waypoints and journey options, so you can get the information you need without delay.

Cost-Free Access

We firmly believe in making sea route planning accessible to all. Public Searoutes is, and always will be, completely free to use. No subscription fees, no hidden charges—just reliable data to support your maritime journey planning.

Data-Driven Insights

Stay informed throughout your planning process with real-time weather updates and essential nautical information. Our platform empowers you to make data-driven decisions, enhancing your understanding of the challenges you might encounter on your hypothetical voyage.

Plan with Precision, Navigate with Caution

While Public Searoutes equips you with valuable data for planning your sea routes, it's essential to emphasize that our service is intended solely for planning purposes. We do not recommend using the calculated routes for actual navigation. Always consult official nautical charts and rely on professional mariners for navigating the seas safely.

Start Planning Your Sea Route Today!

Don't leave your maritime journey to chance. Harness the power of data-driven sea route planning with Public Searoutes . Whether you're preparing for a cargo shipment, a leisurely yacht voyage, or any other maritime adventure, we're here to help you plan with precision.

Key Features of Public Searoutes:

Everything you need to plan your sea route.

Public Searoutes aims to make sea route planning accessible to all. We're committed to providing you with the most accurate, up-to-date information available, so you can plan your voyage with confidence - for free .

Accurate Sea Route Calculation

At Public Searoutes , we prioritize accuracy. Simply input your departure and destination ports, and our advanced algorithms will calculate the most efficient sea route for you. Our calculations are grounded in real-world nautical data and updated regularly.

Customizable Route Options

Tailor your sea route to your specific requirements. Choose from various options such as specific regions, passages, or canals to create a route that suits your needs. Whether you're prioritizing speed or taking a more scenic route, Public Searoutes gives you the flexibility to make informed decisions.

User-Friendly Interface

Our platform is designed for straightforward navigation. Whether you're an experienced mariner or a novice, Public Searoutes 's user-friendly interface ensures that you can access the data you need without complications.

Don't pay for your route calculation. Start using Public Searoutes now.

No signup required. Simply input your waypoints and journey options and get routes, distances and durations for free.

Fast and easy to work with Voyage Estimation

SEAMETRIX MAIN FEATURES OVERVIEW

SEA DISTANCE CALCULATOR

Seametrix serves over 30,000 ports and terminals, offering fully customisable sea routing combinations with the most accurate sea distance results by far. Rhumbline & Great-Circle navigation methods are calculated on the fly by different servers, providing our users with real-world nautical distances by sea.

VOYAGE ESTIMATION

Our voyage estimation module is made in such a way that makes it easy, quick & sleek to work with. By fully modifying your desired sea routing, you can have your customised itinerary exported to our voyage estimation module, and accurately estimate sea freights, voyage costs and ship expenses, in less than a minute!

SEA ROUTES API

Seametrix offers by far the most detailed and accurate sea distances and sea routing API, with a lot of navigational parametirizations, such as Great-Circle and Rhumbline Navigation, SECA avoidance, Piracy avoidance, many On/Off passages, Indonesian Archipelagic Sea Lanes Compliance, & usage of either ports or co-ordinates.

TRY SEAMETRIX!

A state-of-the-art sea distance calculator and voyage estimation software, what we do best, over 30,000 ports & terminals.

We provide sea distances between any port of the world in any country, marinas, oil terminals, bunker hubs, off-shore terminals, oil-gas fields, anchorage areas and more. Our sea distances software serves over 30,000 sea/river ports & terminals worldwide. No other marine software covers such a broad and detailed water navigational network!

Detailed sea routing network

We didn’t follow the pre-calculated port distance tables root; instead, we created the most analytical & thorough sea-routing network to date, and we serve it brilliantly and on-the-fly! Our sea routing is based on many years of data analysis from navigational charts & NASA satellite ship-tracking statistics, thus bringing clarity to the maritime & shipping industry.

Fast & clever algorithms

Sea distances are not as easy to calculate as the routes on land, since the sea routing combinations are billions. Therefore, our sea routing software’s algorithms have been developed by very experienced and specialised software engineers. They are fast & they cleverly exclude certain areas based on draft and other navigational restrictions.

Fully customisable routing

Other than nautical distances between ports, Seametrix offers co-ordinate to co-ordinate routing, by allowing users to insert any co-ordinate or just click on any point on the map. Thus, you can customise your itinerary as you wish, start/end your voyage, or pass by any waypoint you want your vessel to head through.

Great Circle VS Rhumbline

Seametrix is the only sea distance calculator that offers correct and real-world Rhumbline & Great-Circle nautical mile calculation results. Each navigation method is calculated by a different server, with different data sets and algorithms, and offers highly accurate nautical mile calculation results, for either navigational method.

Easy & modern User interface

Seametrix has a very modern and user-friendly interface, developed with latest technologies, and designed to offer a pleasant and easy environment to work with, for calculating nautical distances between any point at sea, as well as estimating freight & voyage costs. Finding and accessing any setting or information has become as easy as it gets!

Over 1,000 routing points

Sea routes followed by Masters in shipping are usually the shortest. Nevertheless there are various exceptions, thus our sea network contains over 1,000 alternative routing points! Combined with the option to make any waypoint function as routing point on the fly, your route can literally be 100% tailor-made as your itinerary requires!

Voyage estimation module

Seametrix offers a handy & easy to work voyage estimation module, which smartly combines simplicity & practicality. Freight estimations will literally take you less than 1 minute, with all the information & fields placed in a fully logical sequence. Routing can also be customised from within the voyage estimation module, for highly accurate freight estimates!

Marine weather forecasts

Seametrix also offers a marine weather forecast module, with both global and local coverage, and info such as ice coverage and thickness, wave and swell height and direction, sea currents, sea temperature, wind speed-direction and stream, barometric pressure etc. Several other marine weather parameters are integrated for more accurate prediction.

Sea route calculator

A very quick sea route calculator showing you the distance in nautical miles from any of the vessels AIS position to any port. Find the shortest route, ETA, days in sea, bunker ports along the route and estimated bunker consumption.  Save and share the routes.

Add ECA, SECA zones, (IMO and local zones), daily updated marine weather, piracy info and sea ice conditions to your route.

Calculate from a port, to any ports, with several port options or consecutive ports.

A very quick sea route calculator for laptops and mobiles

The sea route calculator is available in both products; ShipAtlas and ShipIntel. It will give you the shortest route from any vessel's AIS position in the map to any port or combination of ports, and find the distance, time and ETA. You can also route between ports. If you want to change the route on web; click and drag the route (same as you do in Google maps), and the route will quickly be re-calculated.

Why use this Sea Route Calculator?

The technology Since there are no roads at sea, we have been using many different technologies while developing the Sea Route Calculator. We have created a network of triangles, visibility graphs, machine learning and other technologies. Then we have added information about canals and straits constrains to avoid routing vessels through canals if they are too large for the canal constrains. We have also added AIS tracks for different type and size of vessels to find where the different type of vessels have been sailing in the past. ‍ Thus this Sea Route Planner is not a navigational tool for navigators. The pitch Might be the only sea route calculator able to route from any vessel's AIS position to any port on mobile and web super quickly and accurate FOR FREE and gives you the ETA, days at sea and bunker consumption. You can compare the ShipAtlas sea route calculator with any other sea route calculators there are. ‍ You can add bunker ports available along the route, find canal constrains and do consecutive sea routes. You can route several vessels to one port, and find when they will arrive (ETA), and you can find alternative routes for one vessel to reach a specific port. You can save sea routes. We will continue to invest in the sea route calculator since a sea route should be one of the backbone features in any maritime software.

Mobile and laptop Use the sea route calculator from your laptop or mobile device and find time in sea, ETA first port, distance in nautical miles, bunker consumption, from any of the vessels AIS position. Turn on the marine weather forecast layer if you want to estimate delay due to bad weather. The weather is updated every 24th hour with a 15 days forecast. Turn on the ECA / SECA zone layer and find the bunker consumption. The sea route calculator is excellent for cases such as: your vessel is en route to Tubarao, and your broker asks if your vessel can go to Madre de Deus instead and when she will arrive. You can calculate the sea distance from any of the vessel’s position to any ports to find the deviation time from the vessels existing position, and the ETA to the possible new destination. Click on the vessel and the sea route calculator icon on the vessel card. On web you can click and drag the line to add waypoints or alternative routes (just as you do in Google maps).

Combine layers of information with the sea route calculator

You can add the layers of information you prefer like, and here are some of the layers you can combine with the Sea Route Calculator: 

• Daily updated marine weather layers (wind, currents, perception, waves) and a 15 days forecast for wind, perception.
• Daily updated piracy information.
• Daily updated ice conditions.
• ECA / SECA zones (local and IMO defined zones).
• Switch between default maps and satellite mode.  
• Access information about canal constrains (draft, LOA and beam). If your vessel is bigger, we will route her the shortest way around.
• Add bunker ports and learn where you find bunkers available, bunker grades and prices. We daily update the bunker information.
• Add Polar codes, Load Line or International Navigating Limits (INL).

Click on the layers you add and find detailed information about the specific layer.

The Sea Route Calculator is a backbone of our software products

We have a dedicated team working with the sea route calculation so while you are getting familiar with the sea route calculator, we will continue improving it and make it even smarter. We will add more features and layers of information to solve more user cases, and we will make sure it is super responsive on all your devices.

Available on desktop and mobile

An application you just love to use!

We are dedicated to developing ShipAtlas based on user feedback, so your feedback is highly welcomed.

We invest in having active and happy users, and we want to make it easy to reach us. So we are here to answer your questions, listen to your feedback and support you almost 24/7.

If you have ideas or wishes, want to propose improvements, or find bugs, please send us a chat so we can discuss.

Information

Helpful links.

Seatime Calculator

Seatime Calculator is a tool used in the maritime industry to calculate the amount of sea service or sea time that a seafarer has accrued.

Sea time refers to the time spent working at sea on a vessel 🚢

Enter your ship details, the Date of Sign-On and Sign Off Dates in the Boxes below to calculate the length of your time at sea. You can add multiple voyages to obtain your total sea time.

This calculation is important for various reasons, such as determining eligibility for certain certifications, promotions, or benefits in the maritime sector. The calculator typically takes into account factors like the duration of the sea service, the type of vessel, and any breaks in service.

Please Note: There may be some mismatch of +/- some days in calculating your Sea time because of different techniques used by Shipping Regulatory bodies of different countries. It’s recommended to Keep in hand +10 days from the Required Sea time for particular Exam, Course.

References:

• Sea Time Requirement for DNS Deck Cadets leading to B.Sc Nautical Science – DG Shipping India
• Calculate sea service for an international certificate – Australian Maritime Safety Agency
• Sea time Calculation Relating to USCG
• UK Certificate of Competency Requirements Guide

Welcome to the Onboard Maritime sea time calculator.

Enter your ship details, the date of joining and leaving in the boxes below to calculate the length of your time at sea. You can add multiple voyages to obtain your total sea time.

Sea time is calculated using the same methods required by the UK Maritime and Coastguard Agency. At Onboard Maritime we offer the full range of MCA oral and written preparation courses.

Be one step ahead with your studies! You can start one of our oral preparation courses prior to completing your sea time.

Enquire now, contact [email protected] or view our full range of courses at www.onboardmaritime.com

Seatime Calculator Online

Introduction

Navigating the oceanic field of maritime studies, one comes across numerous calculations and evaluations. Among these, a paramount tool for seafarers is the Seatime Calculator. It plays a crucial role in planning their career trajectory and understanding their sea service duration.

A Seatime Calculator is a maritime computational tool that allows seafarers to calculate their total duration of sea service. By considering factors such as the start and end dates of service, along with any break periods, it provides an accurate measure of an individual's total time spent at sea. The calculator is instrumental for maritime professionals seeking licenses, certifications, or progress in their maritime careers.

How Does the Seatime Calculator Work?

The Seatime Calculator operates on a simple principle. It accepts three major inputs: the start date, end date, and any break periods during sea service. The calculator first verifies these inputs for validity, then subtracts any break periods from the total service duration (difference between start and end dates). It gives the seafarer a precise measure of their sea service time, adhering to maritime norms and regulations.

The Seatime Calculator uses a simple but effective formula:

text copy code Seatime = (End Date - Start Date) - Break Periods

The "End Date" and "Start Date" refer to the respective dates of commencement and conclusion of the sea service. "Break Periods" are intervals such as leaves or training durations, excluded from the total service time. The result, "Seatime", is the actual duration of service spent at sea.

Imagine a mariner who started service on January 1, 2023, and ended on January 1, 2024, with a total of 30 days of break periods. The Seatime Calculator will calculate the sea time as: (365 days - 30 days) = 335 days.

Applications

The Seatime Calculator is invaluable in numerous maritime applications:

• Certification and Licensing: The calculator aids in verifying eligibility for different maritime licenses and certifications.
• Career Planning: Mariners can use it to plan their career progression, ensuring they meet necessary sea service requirements.
• Regulatory Compliance : It assists in maintaining accurate documentation and verifying sea service for compliance with maritime regulations.

Frequently Asked Questions

A Seatime Calculator is a tool used by mariners to compute their actual service time at sea. It calculates the period by considering the start and end service dates and excluding any break periods.

The calculator takes three inputs: start date, end date, and break periods. It subtracts the break periods from the total duration (difference between start and end dates) to calculate the sea time.

The Seatime Calculator is vital for mariners seeking certifications, licenses, or career progression. It also aids in verifying sea service for regulatory compliance.

In the vast ocean of maritime calculations, the Seatime Calculator is a lighthouse, guiding seafarers in understanding their service duration. Its importance in career planning, regulatory compliance, and certification acquisition is truly unmeasured.

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Seatime Calculator

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Sea Distance Calculator

Voyage Calculator

Plan your voyage in advance, beyond the weather forecast range, and reasonably estimate voyage costs, including hire rates and fuel consumption.

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Thoroughly evaluate all available voyage options.

Analyze different speed options by means of the voyage summary in relation to fuel consumption, CO2 emissions, total costs, and other operational indicators.

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This page has been created to allow seafarers to quickly calculate their seatime for applications for Certificates of Competency. We utilise the system of calculation used by the UK Maritime and Coastguard Agency.

Enter the ship name, join date and leave date and click the 'Calculate' button to calulate the length of the trip. The result will be added to a grid and subsequent trips can be added by entering the relevant details and clicking the 'Calculate' button for each trip.