HMS Strongbow was an S-class submarine of the Royal Navy, and part of the Third Group built of that class. She was built by Scotts, of Greenock and launched on 30 August 1943.

HMS Strongbow
History
United Kingdom
Name	HMS Strongbow
Builder	Scotts, Greenock
Laid down	17 April 1942
Launched	30 August 1943
Commissioned	23 December 1943
Fate	Broken up April 1946
General characteristics
Displacement	814-872 tons surfaced 990 tons submerged
Length	217 ft (66 m)
Beam	23 ft 6 in (7.16 m)
Draught	11 ft (3.4 m)
Speed	14.75 knots surfaced 8 knots submerged
Complement	48 officers and men
Armament	6 × forward 21 inch (533 mm) torpedo tubes, one aft 13 torpedoes one three-inch (76 mm) gun (QF 4-inch on later boats) one 20 mm cannon three .303-calibre machine gun

She served in the Second World War, spending most of it in the Pacific Far East, where she sank the small Japanese army cargo ship Toso Maru No.1, the Japanese merchant cargo ship Manryo Maru, four Japanese sailing vessels, a Japanese tug and a Japanese barge, three small unidentified Japanese vessels, three Siamese sailing vessels and six other small Siamese / Japanese vessels.

Strongbow was detected on the surface off Port Swettenham, Malaya on 13 January 1945. Japanese escorts, minelayer Hatsutaka, sub chaser CH-9, auxiliary sub-chaser CHa-41 and one other, soon arrived to attack her. Strongbow managed to escape but sustained such depth charge damage during a 14-hour attack that she was rendered unfit for further service. She was decommissioned at Falmouth in June 1945, and scrapped at Preston in April 1946.^[1]