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HMS J1

HMAS J1 in 1919
HMAS J1 in 1919
History
*United Kingdom
  • Australia
Builder: HM Dockyard at Portsmouth in Hampshire
Launched: 6 November 1915
Decommissioned: 12 July 1922
Fate: Hulk scuttled
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
Complement: 44 personnel
Armament:
  • six 18 in (457 mm) torpedo tubes
  • (four bow, two beam)
  • one 4 in (102 mm) gun

HMS J1 (later HMAS J1) was a J class submarine operated by the Royal Navy and the Royal Australian Navy.

The J class was designed by the Royal Navy in response to reported German submarines with surface speeds over 18 knots (33 km/h; 21 mph). They had a displacement of 1,210 tons surfaced, and 1,820 tons submerged. Each submarine was 275 feet (84 m) in length overall, with a beam of 22 feet (6.7 m), and a draught of 14 feet (4.3 m). The propulsion system was built around three propeller shafts; the J-class were the only triple-screwed submarines ever built by the British. Propulsion came from three 12-cylinder diesel motors when on the surface, and electric motors when submerged. Top speed was 19 knots (35 km/h; 22 mph) on the surface (the fastest submarines in the world at the time of construction), and 9.5 knots (17.6 km/h; 10.9 mph) underwater. Range was 4,000 nautical miles (7,400 km; 4,600 mi) at 12 knots (22 km/h; 14 mph).

Armament consisted of six 18-inch torpedo tubes (four forward, one on each beam), plus a 4-inch deck gun. Originally, the gun was mounted on a breastwork fitted forward of the conning tower, but the breastwork was later extended to the bow and merged into the hull for streamlining, and the gun was relocated to a platform fitted to the front of the conning tower. 44 personnel were aboard.

J1 was built by HM Dockyard at Portsmouth in Hampshire, and launched on 6 November 1915.

J1 operated in patrols in the North Sea. In November 1916, a German force of half a destroyer flotilla, three dreadnoughts, and a battlecruiser set out from port to rescue two submarines U-20 and U-30 that were stranded in fog off Jutland. On the return, having only rescued one of the submarines, the force passed J1 off Horns Reef on 5 November 1916. Two of the dreadnoughts, SMS Kronprinz and SMS Grosser Kurfürst, were torpedoed by J1, earning her commanding officer, Commander N. F. Laurence, a Bar for his Distinguished Service Order. The dreadnoughts did not sink, but reached port and underwent repairs.


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