HMS J4

	HMAS J4 in 1919
History
United Kingdom
Name	HMS J4
Builder	HM Dockyard, Pembroke Dock
Launched	2 February 1916
Fate	Transferred to Australia, 25 March 1919
Australia
Name	HMAS J4
Acquired	25 March 1919
Decommissioned	12 July 1922
Fate	Sunk 1927
General characteristics
Class and type	British J class submarine
Displacement	1,210 long tons (1,230 t) (surfaced); 1,820 long tons (1,850 t) (submerged);
Length	275 ft (84 m)
Beam	22 ft (6.7 m)
Draught	14 ft (4.3 m)
Propulsion	Three shafts; Surfaced: three 12-cylinder diesel engines; Submerged: battery-driven electric motors;
Speed	19 kn (35 km/h; 22 mph) (surfaced); 9.5 kn (17.6 km/h; 10.9 mph) (submerged);
Range	4,000 nmi (7,400 km; 4,600 mi) at 12 kn (22 km/h; 14 mph)
Test depth	300 ft (91 m) max[citation needed]
Complement	44 personnel
Armament	six 18 inch (450 mm) torpedo tubes; (four bow, two beam); one 4 in (102 mm) gun;

HMS J4 (later HMAS J4) was a J-class submarine operated by the Royal Navy and the Royal Australian Navy.