The Sailings – Middle Latitude Sailing
Classical middle-latitude sailing: given departure and destination coordinates, compute course and distance assuming a rhumb line on a Mercator-like sphere.
Method: Middle latitude sailing – good for moderate east–west distances outside high latitudes. Earth curvature and convergence of meridians are partially approximated via the mean latitude.
Free Android App
Prefer to calculate on your phone? The calculations are also available in the free "The Sailings" navigation app for Android.
Includes:
- Mercator Sailing (Rhumb Line)
- Middle Latitude Sailing
- Professional navigation formulas used in maritime training
Input
Departure
Destination
Method: Middle latitude sailing. Distance and course refer to a rhumb line (loxodrome), not great-circle.