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2 stern mounted torpedo tubes added in Groups 3 and 4
The Leninets or L class were the second class of submarines to be built for the Soviet Navy. Twenty-five were built in four groups between 1931 and 1941. They were minelaying submarines and were based on the British L-class submarine, HMS L55, which was sunk during the British intervention in the Russian Civil War. Some experience from the previous Dekabrist-class submarines was also utilised. The boats were of the saddle tank type and mines were carried in two stern galleries as pioneered on the pre-war Russian submarine Krab (1912). These boats were considered successful by the Soviets. Groups 3 and 4 had more powerful engines and a higher top speed.
Sunk with depth charges near Sevastopol on 18 April 1944 by the German submarine chaser UJ-104
Group 2
Six ships were built (L-7 to L-12) and launched between 1935 and 1936. All were built for the Pacific Fleet by plant 202 "Dalzavod" Vladivostok and plant 199 Komsomolsk-na-Amure.
Renamed B-12 in 1949, decommissioned in 1959; stricken in 1983; hull entombed in a stone pier in Magadan in 1986
Group 3
Seven ships were built (L-13 to L-19) and launched from 1937 to 1938. All were assigned to the Pacific Fleet. Considered a new project, the hull was based on the Srednyaya class. They carried 18 mines.
Ship
Fleet
Launched
Fate
L-13
Pacific
2 August 1936
Renamed B-13 in 1949, decommissioned 1956; stricken in 1958
L-14
Pacific
20 December 1936
Renamed B-14 in 1949, decommissioned 1956, stricken in 1984 and scrapped
L-15
Pacific
26 December 1936
Transferred to the Northern Fleet via the Panama Canal in late 1942; stricken in 1958 and scrapped
L-16
Pacific
9 July 1937
Torpedoed by Japanese submarine I-25 on 11 October 1942 near the coast of Oregon while being transferred to the Soviet Northern Fleet
L-17
Pacific
5 November 1937
Renamed B-17 in 1949, decommissioned 1959; served as training ship UTS-84 into the 2000s
L-18
Pacific
12 May 1938
Renamed B-18 in 1949, decommissioned 1958; served as training ship UTS-85 into the 2000s
L-19
Pacific
25 May 1938
Lost on or after 24 August 1945 to unknown cause; probably mined in or off the Le Pérouse Strait
Group 4
6 ships were built (L-20 to L-25) and launched from 1940 to 1941. 3 were assigned to the Baltic Fleet and 3 to the Black Sea Fleet. This group added stern torpedo tubes and new, more powerful diesel engines.
Ship
Fleet
Launched
Fate
L-20
Baltic
14 April 1940
Renamed B-20 in 1949, decommissioned 1956; sank on 10 October 1957 in Chernaya Bay during nuclear testing
Transferred to Northern Fleet 1941; renamed B-22 in 1949, decommissioned 1955; participated in nuclear testing in 1957–1958; stricken in 1959 and scrapped
L-23
Black Sea
29 April 1940
Missing after 1 January 1944; likely sunk 17 January 1944 off Cape Tarchakut by German sub-chaser UJ106
L-24
Black Sea
17 December 1940
Sunk between 15 and 29 December 1942 off Cape Shabla by a mine of the Romanian flanking barrage S-15, laid by the Romanian minelayers Amiral Murgescu, Regele Carol I and Dacia; wreck found in 1991
L-25
Black Sea
26 February 1941
Never finished; sunk while being towed from Tuapse to Sevastopol on 18 December 1944
Mikhail Monakov, Jurgen Rohwer, Stalin's Ocean-going Fleet: Soviet Naval Strategy and Shipbuilding Programs 1935-1953, p. 266
Donald A Bertke, Gordon Smith, Don Kindell, World War II Sea War, Volume 4: Germany Sends Russia to the Allies, p. 323
Sources
Budzbon, Przemysław & Radziemski, Jan (2020). "The Beginnings of Soviet Naval Power". In Jordan, John (ed.). Warship 2020. Oxford, UK: Osprey. pp. 82–101. ISBN978-1-4728-4071-4.
Gardiner, Robert; Chesneau, Roger, eds. (1980). Conway's All The World's Fighting Ships 1922–1946. London: Conway Maritime Press. ISBN0-85177-146-7.
Yakubov, Vladimir and Worth, Richard. (2008) Raising the Red Banner: The Pictorial History of Stalin's Fleet 1920-1945. Spellmount. ISBN978-1-86227-450-1