The Leninets or L class were the second class of submarines to be built for the Soviet Navy. 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 Krab, the world's first minelaying submarine. These boats were considered successful by the Soviets and 25 were built in four groups between 1931 and 1941. Groups 3 and 4 had more powerful engines and a higher top speed.
Submarine L-4 Garibaldets
|Preceded by:||Dekabrist class|
|Succeeded by:||Shchuka class|
|Draft:||All Groups: 4.08 m (13 ft 5 in)|
|L1||Leninets (Ленинец)||Follower of Lenin||Baltic||28 February 1931||Sunk by German artillery October 1941, salvaged, scrapped 1945|
|L2||Stalinets (Сталинец)||Follower of Stalin||Baltic||21 May 1931||Sunk by mine 15 November 1941|
|L3||Frunzenets (Фрунзенец)||Follower of Frunze||Baltic||8 August 1931||Decommissioned 15 February 1971, conning tower preserved as a memorial|
|L4||Garibaldets (Гарибальдиец)||Follower of Garibaldi||Black Sea||31 August 1931||Decommissioned 17 February 1956|
|L5||Chartist (Чартист)||An adherent of Chartism||Black Sea||5 June 1932||Decommissioned 25 December 1955|
|L6||Carbonari (Карбонарий)||Carbonari||Black Sea||3 November 1932||Sunk with depth charges near Sevastopol on 18 April 1944 by the German submarine chaser UJ-104|
Six six ships were built (L7 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.
|L7||Voroshilovets||Follower of Kliment Voroshilov||Pacific||15 May 1935||Decommissioned 1956|
|L8||Dzerzhinets||Follower of Dzerzhinsky||Pacific||10 September 1935||Decommissioned 1950s|
|L9||Kirovets||Follower of Kirov||Pacific||25 August 1935||Decommissioned 1950s|
|L10||Menzhinets||Follower of Menzhinski||Pacific||18 December 1936||Decommissioned 1950s|
|L11||Sverdlovets||Follower of Sverdlov||Pacific||4 December 1936||Decommissioned 1950s|
|L12||Molotovets||Follower of Molotov||Pacific||7 November 1936||Decommissioned 1950s|
Seven ships were built (L13 to L19) 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.
|L13||Pacific||2 August 1936||Decommissioned 1950s|
|L14||Pacific||20 December 1936||Decommissioned 1950s|
|L15||Pacific||26 December 1936||Transferred to the Northern Fleet via the Panama Canal in late 1942, decommissioned 1950s|
|L16||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|
|L17||Pacific||5 November 1937||Decommissioned 1950s|
|L18||Pacific||12 May 1938||Decommissioned 1950s|
|L19||Pacific||25 May 1938||Sunk in 1945|
6 ships were built (L20 to L25) 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.
|L20||Baltic||14 April 1940||Decommissioned 1950s|
|L21||Baltic||17 July 1940||Decommissioned 1950s|
|L22||Baltic||23 September 1939||Transferred to Northern Fleet 1941, Decommissioned 1950s|
|L23||Black Sea||29 April 1940||Sunk 17 January 1944 by German sub-chaser UJ106|
|L24||Black Sea||17 December 1940||Sunk on 15 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|
|L25||Black Sea||26 February 1941||Unfinished. Sunk while being towed from Tuapse to Sevastopol in December 1944|
- L-6 (Карбонарий) (+1944) on wrecksite
- "L-6 of the Soviet Navy - Soviet Submarine of the L (Leninec) class - Allied Warships of WWII - uboat.net". uboat.net. Retrieved 16 April 2019.
- "Великая Отечественная - под водой". www.sovboat.ru. Retrieved 16 April 2019.
- "Researcher @ Large - Soviet submarine L16 and its loss". Retrieved 19 December 2014.
- "Researcher@Large - The Death of Chief Photographer Sergei Mihailoff, USNR and the Soviet submarine L16". Retrieved 19 December 2014.
- 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
- Chesneau, Roger, ed. (1980). Conway's All the World's Fighting Ships 1922–1946. Greenwich, UK: Conway Maritime Press. ISBN 0-85177-146-7.
- Yakubov, Vladimir and Worth, Richard. (2008) Raising the Red Banner: The Pictoral History of Stalin's Fleet 1920-1945. Spellmount. ISBN 978-1-86227-450-1
- L-class submarines (in Russian)