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Heres a great circle sailing calculator I've been working on. Its very basic atm.
http://www.ajof.net/greatcircle.php
Works as long as you don't cross the equator. I'll keep working on it, making it a little smarter and adding things like an initial course. Gonna do one for mercator sailings and possibly plane sailings after too.
http://www.ajof.net/greatcircle.php
Works as long as you don't cross the equator. I'll keep working on it, making it a little smarter and adding things like an initial course. Gonna do one for mercator sailings and possibly plane sailings after too.