Coaster

Boat dashboard: speed, distance from the coast and nearest border.
Once the map has been downloaded, the application is functional offline.

A Premium yearly subscription is available. With Premium subscription, you have maps in HD-High Definition (an example is available on https://swissopt.ch/coaster/#hd), no ads to activate options alert and distance to nearest border.

Terms of Use (EULA) apply (https://swissopt.ch/coaster/support/terms_conditions.html).