design of the class
History
Soviet Union
Name	K-3
Laid down	27 December 1936
Launched	31 July 1938
Commissioned	27 November 1940
Fate	Sunk on 21 March 1943 by German submarine chasers
General characteristics
Displacement	1490 tons surfaced 2600 tons submerged
Length	97.65 m
Beam	7.4m
Draft	4.51m
Propulsion	2-shaft diesel electric, 8400-hp diesel, 2400-hp electric
Speed	surface - up to 22,5 knots submerged - 10 knots
Range	14,000 nm at 11 knots
Test depth	230 ft (70 m)
Complement	67 (10 officers)
Armament	6 × bow torpedo tubes 2 × stern torpedo tubes 2 × external stern torpedo tubes(24 torpedoes) 2 × 100 mm guns, 2 - 45mm guns, 20 mines
Service record
Part of:	Northern Fleet

Soviet submarine K-3 was a K-class submarine of the Soviet Navy during World War II.

At first located in the Baltic Sea, she was relocated to the Northern Fleet on 8 November 1941. She engaged enemy shipping with torpedoes, with gunfire, and as a minelayer.

On 3 December 1941, after a failed torpedo attack, K-3 was damaged by depth charges from the German submarine chasers UJ-1403, UJ-1416, and UJ-1708. K-3 was forced to surface and engaged in a gun battle the three attacking units, sinking UJ-1708 and forcing the other two ships to withdraw.

K-3 was sunk on 21 March 1943 by depth charges from the German submarine chasers UJ-1102, UJ-1106, and UJ-1111.

Ships sunk by K-3 ^[1]

Date	Ship	Flag	Tonnage	Notes
3 December 1941	UJ-1708		470 GRT	Submarine chaser(artillery)
30 January 1942	Ingøy		327 GRT	Freighter (mine)[2]
9 July 1942	UJ-1110		527 GRT	Submarine chaser(mine)(also claimed by K-21)
5 February 1943	UJ-1108		462 GRT	Submarine chaser(torpedo)
12 February 1943	Fechenheim		8,116 GRT	Freighter (mine)(damaged beyond repair)
Total:			9,902 GRT

K-3 is the fifteenth-highest-scoring Soviet submarine (not counting ships sunk by mines she laid), with 9,048 GRT sunk.