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Japanese submarine I-8

History
Name: I-8
Builder: Kawasaki Kobe
Laid down: 11 October 1934
Launched: 20 July 1936
Completed: 5 December 1938
Fate: Sunk off Okinawa, 31 March 1945
General characteristics
Class and type: Junsen-class J3 Type submarine
Displacement:
  • 2,525 long tons (2,566 t) surfaced
  • 3,583 long tons (3,640 t) submerged
Length: 358.5 ft 6 in (109.42 m)
Beam: 29 ft 8 in (9.04 m)
Draft: 17 ft 3 in (5.26 m)
Propulsion:
  • Diesel-electric
  • 2 diesel engines, 11,200 hp (8,400 kW) (surfaced)
  • Electric motors, 2,800 hp (2,100 kW) (submerged)
Speed:
  • 23 knots (43 km/h; 26 mph) (surfaced)
  • 8 knots (15 km/h; 9.2 mph) (submerged)
Range: 14,000 nmi (26,000 km) at 16 knots (30 km/h; 18 mph)
Test depth: 100 m (330 ft)
Complement: 100 officers and men
Armament:
Aircraft carried: 1 × Yokosuka E14Y seaplane

The Japanese submarine I-8 was a World War II Junsen Type J-3 Imperial Japanese Navy submarine. The vessel, along with the I-7, were the largest Japanese submarines to be completed before the outbreak of the Pacific War. It was based on the KD (Kaidai) type. Both submarines participated in the attack on Pearl Harbor, they also conducted patrol missions with Yokosuka E14Y seaplanes.

In 1943 I-8 completed a technology exchange mission by sailing to German occupied France and back to Japan. Under a new commander later in her career, the submarine's crew committed several war crimes in the latter period of the second world war.

These missions took place under the Axis Powers' Tripartite Pact to provide for an exchange of strategic materials and manufactured goods between Germany, Italy, and Japan. Initially, cargo ships made the exchanges, but when that was no longer possible, submarines were used. Only seven submarines attempted the trans-oceanic voyage: I-30 (April 1942), I-8 (June 1943), I-34 (October 1943), I-29 (November 1943), I-52 (March 1944) and the German submarines U-180 and U-511 (August 1943).

Of these, I-30 was sunk by a mine, I-34 by the British submarine Taurus, I-29 by the American submarine Sawfish, and I-52 by US Navy aircraft.


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