Russia celebrates 90th anniversary of the Soviet Navy

Unfortunately for the Soviets, much of their fleet on the Baltic Sea was blocked in Leningrad and Kronstadt by Finnish and German minefields during 1941–1944 and maimed by mines and air attacks, nevertheless numerous sorties by attack boats and submarines actions were held. On the Black sea with the loss of main naval base - Sevastopol, and effective actions of axis aviation as well as minefields navy limited the efficiency of large surface ships. The Northern Fleet, composed mostly of destroyers (World War I Novik-class and more modern project 7 and 7u vessels), played a major role in anti-aircraft and anti-submarine defence of allied convoys heading to Murmansk.