Nautics Sailmate

Nautics Sailmate™ is a Finnish easy-to-use navigation app for leisure boaters. Sailmate uses the Finnish Transport Agency's familiar and safe sea charts, which are electronic copies of the official printed nautical charts of Finlands sea- and lake districts.
Downloading Sailmate is free.
In the Sailmate Free level, you can view the nautical charts and basic marina service information and save your own places on the chart.
Sailmate Premium is a package of features for navigation, such as location display, course indication, speed display, detailed marina information and offline chart downloading. In addition, you can easily plan routes and record tracks.
The Scout Routes -content package has been made in cooperation with Turun Partio-Sissit ry. The package brings to your device more than 450 smaller marina and natural harbours, and more than 2,000 miles unmarked boating routes in the Turku archipelago, Åland, the Gulf of Finland and the Bothnian Sea.
Term & conditions: https://www.sailmate.com/en/kayttoehdot