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 [citation needed]
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. 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.