Soviet submarine S-7
S-7 was an [Soviet Soviet S-class submarine|S-class submarine|S-class] submarine of the Soviet Navy. Her keel was laid down by Krasnoye Sormovo in Gorkiy on 14 December 1936. She was launched on 5 April 1937 and commissioned on 30 June 1940 in the Baltic Fleet. During World War II, the submarine was under the command of Captain Sergei Prokofievich Lisin and took part in the Soviet submarine Baltic Sea campaign in 1942. S-7 scored victories, but was sunk in action.
Design
The Srednyaya or S-class submarine, also called the Stalinets class, was an ocean-going diesel electric attack submarine. Its pressure hull had seven compartments, and the Series IX-bis submarine's displacement was while on the surface and while submerged. It had a length of, a beam of, and a draft of. It had two diesel engines to power it on the surface and two electric motors for when it was submerged, providing and, respectively, to the two propeller shafts. This gave it a speed of on the surface and while underwater, and the submarine had a range of. Its test depth was, and as armament it had six torpedo tubes, one deck gun, and one gun.S-7 was part of the Series IX-bis, which was a modification of the original three boats of the S-class, the Series IX. The main difference between them was the replacement of German components used in Series IX with Soviet equivalents that could be manufactured domestically.
Service history
The submarine made all her victories in summer 1942, having some success against the German-Swedish iron ore shipping lines.On 27 July 1942 S-7 also attacked the German merchant Ellen Larsen : the torpedoes missed and S-7 opened fire with her gun. As result the merchant was driven ashore.
Loss
While attempting a new campaign, S-7 was attacked, torpedoed and sunk by the.Four crewmembers were saved and captured, including the commander Lisin. Commander Lisin was believed killed in action and was awarded post-mortem the distinction, Hero of the Soviet Union. Once Finland signed an armistice with the Allies in 1944, Lisin was freed and was sent by the Soviets to an NKVD special camp. However accusations against him were dropped and became a military instructor at an officer school.