Free Navigation & Ship Tools
Access our comprehensive suite of maritime calculation tools
Precise arrival time calculations of your destination port
Calculate the shortest path between two points on the Earth's surface
Calculate gyro error, compass error, true course, magnetic course, and compass course using celestial navigation.
Find how much chain to pay out when anchoring at a given depth and scope ratio.
Convert arc measurements (degrees, minutes, seconds) to time (hours, minutes, seconds).
Quickly find how many days are left in your seafarer contract with this smart calculator.
Easily convert latitudes and longitudes in decimal degrees, degrees-minutes-seconds, and degrees-decimal minutes.
Convert time values into arc degrees instantly. Ideal for navigation, astronomy, and geodesy calculations.
Determine safe anchoring radius using vessel length and chain length.
Calculate the course and distance between two points, which models the Earth as a flat plane.
Swiftly discover your arrival coordinates given your departure position, speed, time, (distance), and course.
Determine course and distance when sailing between two coordinates.