Dekabrist-class submarine

	D-3 Krasnogvardyeyets on a Soviet stamp
Class overview
Name	Dekabrist
Builders	3 at Ordzhonikidze Shipyard, Leningrad; 3 at Marti Yard, Nikolayev;
Operators	Soviet Navy
Preceded by	Bars class (Imperial Russian Navy)
Succeeded by	Leninets class
Built	1927-1929
In service	1928-1958
Planned	6
Completed	6
Lost	4
Retired	1
Preserved	1
General characteristics
Type	diesel/electric-powered attack submarine
Displacement	933 tons surfaced; 1,354 tons submerged;
Length	76.00 m (249 ft 4 in)
Beam	6.5 m (21 ft)
Draught	3.80 m (12.5 ft)
Propulsion	2 shafts, three-bladed propellers; - Two 1,100hp MAN/Kolomna diesels; - Two 525hp PG-20 electric motors; - Two electric creeping motors 50hp; - 60 DK storage batteries;
Speed	14 knots (26 km/h) surfaced; 9 knots (17 km/h) submerged;
Range	3,600 nmi (6,700 km) at 14 kn (26 km/h) surfaced; 7,500 nmi (13,900 km) at 9 kn (17 km/h) surfaced; 132 nmi (244 km) at 2 kn (3.7 km/h) submerged;
Test depth	295 ft (90 m)
Complement	53 officers and crew
Armament	8 21-inch (533 mm) torpedo tubes (6 bow, 2 stern), 14 torpedoes carried; 1 × 100mm/51 cal. Main deck gun; 1 × 45mm/46 cal. K-21 AA gun; 1 × 7.62 machine-gun;

The Dekabrist class, also known as Series I, were the first class of submarines built for the Soviet Navy after the October Revolution of 1917. They were authorized in the Soviet Naval Shipbuilding Program of 1926, marking the revival of submarine design in Russia. They were authorized in the Soviet Naval Shipbuilding Program of 1926, and began their sea trials in 1930.

Of the six vessels built, two survived World War II, and one submarine of the class is now a museum ship.

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