Calculate course and distance when sailing due East or West along a parallel of latitude,

Determine the true course and distance between two coordinates using Mercator sailing, acc

Calculate meridional parts for any latitude, and reverse calculate latitude from a given m

Calculate the precise course and time required to intercept another vessel using vector an

Calculate the precise wheel over point for vessel course alterations, using turn radius or

Swiftly discover your arrival coordinates given your departure position, course, speed and