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Great Circle Route
Links
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Source: Github Repository
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Download: Download Page
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Cruiser’s Forum: Route_pi Discussion Thread
Route Plugin
“Salty Paws” route plugin handles much more than Great circles, introduced here.
The plugin has a few features not present in the built-in tool. It can calculate a composite route, and the distance between the waypoints can be set by the user. The end result, however, is a “gpx” file that is exported, and then imported into OpenCPN via the Route Manager.
A Great-circle from Cook Strait to Cape Horn limited by 60° S