Speed

Instead of specifying specific times of arrival at waypoint locations, we can more conveniently specify the average cruising speed towards a waypoint. The following example sets the average speed at 17 knots on a great circle route from Galway to New York via Azores Islands:

using ship speed

https://api.seamon.io/forecast?waypts=(Galway;2018-12-22T12:00),(Azores_Islands;17kn),(New_York;17kn)&params=gep|wind&view=graph