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Japan's Imperial Navy flag

Japan's Ibuki cruiser / Type "A"

Design

The Ibuki was to be the start of a new heavy class of cruiser based on the Mogami class. Two ships were ordered under the 1941 Program.

After being launched construction was halted. Then it was decided to make the Ibuki into a fast oiler. Then in the summer of 1943 the decision was made to make the Ibuki into an aircraft carrier.

After the heavy losses at Midway the 301 had its construction halted and in its place was to be built the aircraft carrier Amagi.

Aircraft

There were to be two catapults for launching aircraft.

Ships

IJN Ibuki

  • Manufacturer: Kure Dock Yard, Kure Navy Yard
  • November 1941: Ordered.
  • April 1942, April 24, 1942: Laid down.
  • May 21, 1943: Launched.
  • 1943: Converted to aircraft carrier Ibuki at Kure.

301

  • Manufacturer: Mitsubishi at Nagasaki
  • November 1941: Ordered.
  • June 1942, June 1, 1942: Laid down.
  • July 1942: Construction halted.
  • 1942: Cancelled.

Specifications

  Ibuki
Crew 876
Displacement 12,200 tons
Displacement - Loaded 14,828 tons
Physical Characteristics  
Length 658'
200.5 m, 200.6 m
Length - Water Line 650' 6", 650' 7"
198.29 m, 198.3 m
Length - Between Perpendiculars 616', 616' 2"
187.7 m, 187.8 m
Beam 63'
19.2 m
Draft / Height 19' 9", 19' 10"
6 m, 6.04 m
Performance  
Speed 33 knots, 35 knots
Range at 18 knots 8,150 nautical miles
Armament 20 cm L/50 Type 3 twin turrets, 8" twin turrets, 8" / 20.3 cm L/50 twin turrets: 5
Anti-Aircraft 5" DP twin mounts, 5" / 12.7 cm L/40 DP twin mounts, 12.7 cm L/40 Type 89 HA twin mounts: 4
25 mm, 25 mm Type 96 twin mounts: 4, 8, 30
13.2 mm, 13.2 mm Type 93 twin mounts: 2, 4
Torpedo Tubes 24" / 61 cm: 4 mounts 4 tubes each
Aircraft 3
Armor  
Belt - Main  
Deck  
Turrets  
Engines  
Boilers Kanpon: 8
Shafts 4
Turbines Geared
HP 152,000
Oil 2,163 tons

Sources:

  1. Japanese Warships of World War II, A. J. Watts, 1966
  2. The Imperial Japanese Navy, A. J. Watts and B. G. Gordon, 1971
  3. Cruisers of World War Two An International Encyclopedia, M. J. Whitley, 1995
  4. Japanese Cruisers of the Pacific War, Eric Lacroix, Linton Wells II, 1997
20th Century American Military History Crucial Site