Navigation Calculator
All calculations are executed in a few seconds and you get a complete overview of the details step by step (ideal for checking your manual work) as well as a graphical representation of courses, speeds, distances and positions. You can calculate for different projections: Plane, Mercator or WGS84 (as used in ECDIS). See our theory section for more background on projections.
The chart plotting section treats the base problems: course to steer and course over the ground. Related topics were added like set and rate of tidal stream, interception course and wheel over point. All calculations have a graphical view, also clearly explained in the theory section.
With the rhumb line (loxodrome) calculator you calculate course and distance between a departure position and an arrival position, or find the estimated position starting from a given departure position and a course and distance to go. The graphical representation is a real asset.
The great circle calculator (orthodrome) let’s you find the distance, initial course and final course between a departure and arrival position. It also calculates the vertex and performs some analysis: cross track analysis, safe latitude analysis and waypoint calculation along the great circle. The calculation details show different methods like ABC tables, Haversine and Napier. Read the help pages carefully.
Finally with the ETA calculator you determine date and local time of arrival based on voyage data like speed and distance.
Our theory section is again a reference on nautical charts and on basic chart plotting. The introduction is about SOLAS and IMO requirements.
We hope this app will improve your daily work and efficiency!
By DBG Nautical team.
Category : Education
Reviews (30)
This is really helpful ,but there is a slight error in great circle sailing ,the direction of the final course should be contrary name to LAT 1 and same name with DLO
🚢Just started. I Was searching for Mercator sailing and other navigation calculation app with accuracy.So far done some calculations and very much satisfied and like the way things explained in details manner.:🤗😃🗾
so interesting and useful app. But it would be better if there were some formulas for calculating. Anyway this is one of the most important app for checking and making calculations
thank you developer for sharing this great nav.app. this really help me as navigation officer to take course and distances due to our ship is lack of available charts. Godbless.
Excellent app it helps a lot on my daily work routine without manual calculations it ease the burden on long hand method.
Simple, easy to use navigation calculator.
Very Useful for Plotting and Calculations... Especially for those still using paper charts onboard
its a helpful for navigator and easy to dist and cos for every one on the bridge
Great Circle calculation, through 5 deg longitude are not accurate.
Best app I have ever seen. 💯 helpful app correct calculations. 10/10
Thanks for nice program. The.best.ever has that give accurate answwr.
Perfect so easy to be used and practical one thank you
It's the best Making navigation very handy tool
i just tested this app and the answers are all correct, great app !
I don't know if this is a problem with my device but it won't show calculations
Useful and Accurate information
Very useful to my profession... thanks
very helpful apps.thank u so much
excelent app. thanks!
Best
is this app for site saftpass MH and tickets ....
OMG! I can't believe that! It's very useful for navigators. I gave stars and recommend to download it!
OK thanks so much for your help
the best app for navigator
Why not use Open Seas Maps?
Veryusefull
I am love it,it is very useful for merchant navy officer,and no ads are coming while using , that's time I love it
All what deck officer need.thank DBG
All apps of DBG nautical are awesome and worth downloading. Application with theory description. Thanks for the app
This app helps a lot but it would be better if the formula for calculating the vertex is shown....I found it impossible to determine the correct position of vertex since there is slight difference in the calculations formula used by the creator of this....Furthermore, the rounding of the decimal number should be done at the final stage of your calcukations.....But anyway it still a useful app as reference in the great circle calculation......Thank you