get https://api.searoutes.com/gr/route//
This endpoints returns the route between a source (lat,lon) and a target (lat,lon) on the water. These (lat,lon) objects are encoded as lat:{latitude_value}lon:{longitude_value} or lon:{longitude_value}lat:{latitude_value} interchangeably. Query parameters can be added to your request to avoid certain areas, i.e. SECA (avoidSeca) / Piracy (avoidPiracy), or specific zones, i.e. Panama / Suez (blockedAreas). You can also specify the average speed of your vessel to get a better estimation of the arrival time (speed).