From Sandy Estabrooks Guide to the Abacos, Bahamas
For Use with a Mac or PC.
This little graphically enhanced spreadsheet made in 96 (Excel) will calculate the distance and heading from one waypoint to another. I used a full spreadssheet version for in house planning of my Abaco trips. (If you are familiar with Excel you can use the formulas to create a complete route spreadsheet.)
Note: The formulas are based on planar not spherical geometry, so errors will be encountered over greater distances. However any inaccuracy will be of little consequence for distances one typically travels in a day even in a fast boat.
Just enter the latitude and longitude of your departure and destination waypoints along with your typical cruising speed.
Simple as that.
Just to play it safe, the usual disclaimer:
This excel spreadsheet should not be used for navigation.
Familiar with Excel? Why not use formulas to create a complete route spreadsheet.
The boat is my Motu Iti II - Catalina Islander 34, anchored in Hope Town Harbour, Abaco