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 four groups between 1931 and 1941. Groups 3 and 4 had more powerful engines and higher speed.

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.

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.

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.

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.

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Wikipedia