Leninets-class submarine
      
  Submarine L-4 Garibaldets  | 
| Class overview | 
| Preceded by: | 
Dekabrist class | 
| Succeeded by: | 
Shchuka class | 
| Built: | 
1931–1941 | 
| 
In commission: | 
1931–1971 | 
| Completed: | 
25 | 
| Lost: | 
4 | 
| Preserved: | 
1 (partially) | 
| General characteristics  | 
| Displacement: | 
- Group 1+2:
 
- 1,051 tons surfaced
 
- 1,327 tons submerged
 
- Group 3+4:
 
- 1,123 tons surfaced
 
- 1,416 tons submerged
 
  | 
| Length: | 
- Group 1+2: 81 m (265 ft 9 in)
 
- Group 3+4: 83.3 m (273 ft 4 in)
 
  | 
| Beam: | 
- Group 1+2: 6.6 m (21 ft 8 in)
 
- Group 3+4: 7 m (23 ft 0 in)
 
  | 
| Draft: | 
All Groups: 4.08 m (13 ft 5 in) | 
| Propulsion: | 
- Diesel-electric, 2 shafts
 
- Group 1+2:
 
- 2,200 hp (1,600 kW) diesels
 
- 1,450 hp (1,080 kW) electric motors
 
- Group 3+4:
 
- 4,200 hp (3,100 kW) diesels
 
- 2,400 hp (1,800 kW) electric motors
 
  | 
| Speed: | 
- Group 1+2:
 
- 14 knots (26 km/h) surfaced
 
- 9 knots (17 km/h) submerged
 
- Group 3+4:
 
- 18 knots (33 km/h) surfaced
 
- 10 knots (19 km/h) submerged
 
  | 
| Complement: | 
53 | 
| Armament: | 
- 1 × 100 mm gun
 
- 1 × 45 mm gun
 
- 6 × 21-inch (533 mm) bow torpedo tubes
 
- 12 × torpedoes
 
- 20 × mines
 
- 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. 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 4 groups between 1931 and 1941. Groups 3 and 4 had more powerful engines and higher speed.
Ships
Group 1
6 ships were built (L1 to L6), all launched in 1931. 3 were assigned to the Baltic Fleet and 3 to the Black Sea Fleet, including Soviet submarine L-3.
|  Number | 
 Name | 
 Meaning | 
 Fleet | 
 Launched | 
 Fate | 
|  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 18 April 1944 by German sub-chaser UJ 104 near Constanza | 
Group 2
6 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.
|  Number | 
 Name | 
 Meaning | 
 Fleet | 
 Launched | 
 Fate | 
|  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 | 
Group 3
7 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.
|  Ship | 
 Fleet | 
 Launched | 
 Fate | 
| L13 | 
Pacific | 
 | 
Decommissioned 1950s | 
| L14 | 
Pacific | 
 | 
Decommissioned 1950s | 
| L15 | 
Pacific | 
 | 
Transferred to the Northern Fleet via the Panama Canal in late 1942, decommissioned 1950s | 
| L16 | 
Pacific | 
 | 
Torpedoed by Japanese submarine I-25 on 11 October 1942, near the coast of Oregon while being transferred to the Soviet Northern Fleet[1][2] | 
| L17 | 
Pacific | 
 | 
Decommissioned 1950s | 
| L18 | 
Pacific | 
 | 
Decommissioned 1950s | 
| L19 | 
Pacific | 
 | 
Sunk in 1945 | 
Group 4
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.
|  Ship | 
 Fleet | 
 Launched | 
 Fate | 
|  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 24 December 1942 by mines off the Bulgarian coast, wreck located by divers in 1991[3] | 
| L25 | 
Black Sea | 
26 February 1941 | 
Unfinished. Sunk while being towed from Tuapse to Sevastopol in December 1944 | 
References
-  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 (Russian)