Loisto Mariner

Loisto Mariner is the ultimate boating companion. It combines Finnish nautical charts with precise topographic maps, provides AIS-based vessel identification, offline maps support, and a powerful search powered by the National Land Survey of Finland. Navigate seaways and inland waters, plan routes on land and at sea, and access up-to-date weather forecasts from the Finnish Meteorological Institute.

Save favorites, share your location, discover guest harbors along the coast and on lakes, and view your route in a 3D bird’s-eye view. All maps are vector-based and sourced from Finnish authorities, with offline usage available for roaming.