This app is your companion for all your chart work: it covers basic chart plotting problems, rhumb line calculations and great circle calculations. Whether you are a student, a teacher or a professional navigator, you will certainly benefit by using this app. Comprehensive help pages clearly indicate the data to be filled in, and expected outcomes.

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.

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## What does the Navigation Calculator app cover?

The app covers basic chart plotting problems, rhumb line calculations, and great circle calculations.

## Who can benefit from using this app?

Students, teachers, and professional navigators can benefit from using this app.

## What projections can the app calculate for?

The app can calculate for Plane, Mercator, or WGS84 projections.

## What topics are covered in the chart plotting section?

The chart plotting section covers course to steer, course over the ground, set and rate of tidal stream, interception course, and wheel over point.

## What can you calculate with the rhumb line calculator?

With the rhumb line calculator, you can calculate the course and distance between a departure and arrival position, or find the estimated position based on a departure position, course, and distance to go.

## What analysis can be performed with the great circle calculator?

The great circle calculator can perform cross track analysis, safe latitude analysis, and waypoint calculation along the great circle.

## What can you determine with the ETA calculator?

With the ETA calculator, you can determine the date and local time of arrival based on voyage data like speed and distance.

## What is covered in the theory section of the app?

The theory section covers nautical charts, basic chart plotting, SOLAS, and IMO requirements.

## Who developed the app?

The app was developed by the DBG Nautical team.
Good App
Htun Min
Perfect so easy to be used and practical one thank you
youssef nawar
It's the best Making navigation very handy tool
Billy Asa