Concept

Naval warfare in the Winter War

Summary
The Naval warfare in the Winter War was the naval part of the Winter War between Finland and the Soviet Union from 30 November 1939 to 13 March 1940. Overall, the level of naval activity was low. However, Finland had coastal artillery batteries which took part in battles along its coast. Naval activity during the Winter War was low. The Baltic Sea began to freeze over by the end of December, which made the movement of warships very difficult; by mid-winter, only ice-breakers and submarines could still move. The other reason for low naval activity was the nature of Soviet Navy forces in the area. The Baltic Fleet was a provincial coastal defence force which did not have the training, logistical structure, or landing craft to undertake large-scale operations. Furthermore, the Soviet Navy was technologically inferior to the British Royal Navy and the German Kriegsmarine. Still, the Baltic Fleet was strong; it had two battleships, one heavy cruiser, almost 20 destroyers, 50 motor torpedo boats, 52 submarines and other vessels. The Soviets used naval bases in Paldiski, Tallinn and Liepāja in Estonia and Latvia for their attacks. The Finnish Navy was a coast defense force with two coastal defence ships, five submarines, four gunboats, seven motor torpedo boats, one minelayer and six minesweepers. The two coastal defence ships, and , were moved to the harbour in Turku where they were used to stiffen the air-defences. Their anti-aircraft guns knocked down one or two planes over the city, and the ships remained there for the rest of the war. Beside the coastal defense, the Finnish Navy also protected Åland islands and merchant vessels in the Baltic sea — only a minor part of the fleet could engage in offensive military action. Furthermore, the Soviet aircraft bombed Finnish vessels and harbours and dropped mines to seaways. Still, the Finnish merchant ship losses were low as only 5 ships were lost to Soviet action.
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