Finnish Navy and the Winter War

The Finnish Navy did not engage in actual naval battles during the Winter War. During the ar’s open water season, darkness protected the navy’s minelaying operations on the Gulf of Finland and the escorting of merchant ships on the Sea of Åland and the Gulf of Bothnia. Starting in mid-January, the ice conditions prevented both the enemy and the Finnish Navy from conducting any significant operations. The Finnish Navy was left with the task of maintaining trade transport to the Swedish territorial waters with icebreakers, protecting trade ports and merchant ships from the enemy’s aerial attacks with its anti-aircraft weapons, locating any mines dropped by the enemy from the air and carrying out minesweeping.

Naval forces during the war | Talvisota

 

What did they have at Lake Ladoga?

 

They had some E-boats but practically there was no naval military actions as the lake was frozen.