### CONSTANT-COURSE - V.23

by Loxodrome

(Degrees: N, E = plus; S, W = minus)

**DISPLACEMENT - Explanation **

This program calculates the displacement of a ship from an initial position, given its course, velocity and time.
It is assumed that the ship follows the rhumb-line (= Loxodrome) to its final position. -
The model for the earth is a sphere with 21600 nautical miles perimeter.

Results were partly checked against the rhumb-solver in:
*https://geographiclib.sourceforge.io/cgi-bin/RhumbSolve*

for distances up to 20.000 nautical miles.

**Copyright**

This program is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by the Free Software
Foundation, either version 3 of the license or any later version.

This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY;
without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
See the GNU General Public License
(www.gnu.org/licenses/) for more details.

*If errors are encountered, kindly send a note to info@ocean-navigation.de*.
Author: Heiner Müller-Krumbhaar
*- Last update 4.may 2023.*