entrance channel Naantalin väylä is 120 kilometres long and starts southern of Utö. Since 2009 it is cleared for vessels with drafts up to 15.3 m (50 ft), after...

Shch-317 torpedoed on 16 June 1942 in the Gulf of Finland between Bogskär and Utö, Finland. Argo was built at the Napier R. & Sons shipyard in Glasgow, Scotland...