World War II Vehicles, Tanks and Airplanes, picture of P-51 Mustang
World War II Vehicles, Tanks and Airplanes, picture of T-34/85
World War II Vehicles, Tanks and Airplanes, picture of Fw-190
World War II Vehicles, Tanks and Airplanes, picture of Churchill
wwiivehicles.com ©2016
Search:
Japan's Imperial Navy flag

Japan's Unryu class fleet aircraft carriers

Photos

Aircraft from the USS Essex attacking the IJN Kaiyo (top) and the IJN Amagi or IJN Katsuragi (bottom) at Kure on March 19, 1945:
Japan's Aircraft from the USS Essex attacking the IJN Kaiyo (top) and the IJN Amagi or IJN Katsuragi (bottom) at Kure on March 19, 1945
U.S. Naval Historical Center Photograph NH-95778
The IJN Kaiyo (right), IJN Amagi or IJN Katsuragi (bottom), and a submarine (upper left):
Japan's The IJN Kaiyo (right), IJN Amagi or IJN Katuragi (bottom), and a submarine (upper left)
U.S. Navy photo 80-G-309660
Amagi on August 19, 1944:
Amagi on August 19, 1944
Japanese Navy photo
Katusuragi on October 19, 1944:
Katusuragi on October 19, 1944
Japanese Navy photo
Unryu on August 19, 1944:
Unryu on August 19, 1944
Japanese Navy photo

Design

The Unryu class ships were similar in design to the Hiryu.1,2,3,4,5,7 They were ordered under the 1941 Program.7

Flight Deck

Two elevators were installed in the flight deck.2,5,7

Hangars

There were two hangars.5

Aviation Fuel

The aviation fuel had concrete surrounding its storage tank.5

Engines

The Amagi, Ikoma, Kasagi, and Unryu had the engines originally allocated for cruisers installed.2,3,7

The Aso and Katsuragi had destroyer turbine engines installed due to the lack of more powerful engines.1,3,5,7

Construction Programs

In the 1942 Program hull number 800 was ordered but it was later cancelled.1 In the 1942 Modified Program hull numbers 5002, 5005, and 5008 - 5015 were ordered but all were later cancelled.1

Ships

IJN Amagi, (an extinct volcano5,6)

  • Manufacturer: Mitsubishi7, Mitsubishi at Nagasaki1,2,3
  • October 1, 1942: Laid down.7
  • October 15, 1943: Launched.1,2,3,7
  • August 10, 1944: Completed.2,3,7
  • July 24, 1945: Sunk.1,2,3,4,7 Capsized from aircraft of TF38 at Kure.2,3,4,7

IJN Aso

  • Manufacturer: Kure7, Kure Navy Yard1,2,3
  • June 8, 1943: Laid down.7
  • November 1, 1944: Launched.1,2,3,7
  • January 1945: Completed to hangar deck level when work stopped.1,2
  • July 24, 1945: Total loss while still under construction.1

IJN Ikoma

  • Manufacturer: Kawasaki7, Kawasaki at Kobe1,2,3
  • July 5, 1943: Laid down.7
  • November 17, 1944: Launched.1,2,3,7
  • January 1945: Completed to hangar deck level when work stopped.1,2
  • July 24, 1945: Total loss while still under construction.1

IJN Kasagi

  • Manufacturer: Mitsubishi7, Mitsubishi at Nagasaki1,2,3
  • April 14, 1943: Laid down.7
  • October 19, 1944: Launched.1,2,3,7
  • April 1945: 84% completed when work stopped.1,2

IJN Katsuragi, (mountain near Osaka5,6)

  • Manufacturer: Kure7, Kure Navy Yard1,2,3
  • December 8, 1942: Laid down.7
  • January 19, 1944: Launched.1,2,3,7
  • October 10, 1944: Commissioned.2,3

IJN Unryu, (heaven bound dragon riding the clouds5,7)

  • Manufacturer: Yokosuka7, Yokosuka Navy Yard1,2,3
  • August 1, 1942: Laid down.7
  • September 25, 1943: Launched.1,2,3,7
  • August 6, 1944: Completed.2,3,7
  • December 19, 1944: Sunk.1,2,3,7 Torpedoed by USS Redfish 200 nautical miles southwest of Shanghai.2,3,7

800

  • Cancelled.1,2,3

5002, 5005

  • Cancelled.1,2,3

5008 - 5015

  • Cancelled.1,2,3
  • 17,500 tons2
  • 786' 6" length2

Usage

The lack of fuel and trained pilots prevented the Unryu class of carriers from seeing combat.2,5

Emergency Cargo

The Unryu was ferrying Ohkas to Manila when she was attacked and sunk by the USS Redfish.5 Only 147 of her crew survived.5

Repatriation

After the war the Katsuragi was used to repatriate Japanese military personnel after World War II.3,5,7

Specifications

  Unryu class
Crew 1,4504, 1,5002, 1,5953,5,7
Displacement 17,150 tons1,2,3,5,7, 17,250 tons4
Displacement - Loaded 22,534 tons3, 22,500 tons7, 22,550 tons4
Physical Characteristics  
Length 741' 6"2, 742'5, 745' 5"4, 745' 11"7, 746' 1"3
226 m2, 227.2 m4, 227.35 m7, 227.4 m3
Length - Water Line 731' 6"2, 731' 8"3,7
223 m2,3,7
Length - Between Perpendiculars 679' 2"3,7, 741' 6"1
207 m3,7
Beam 72'1,5, 72' 2"3,4,7, 72' 3"2
22 m2,3,4,7
Draft / Height 25' 7"4, 25' 9"1,2,3,7, 26'5
7.8 m2,4, 7.85 m3,7
Flight Deck 711' 6" x 88' 6"1,2,3, 711' 7" x 88' 7"4, 712' x 88' 6"7
216.9 m x 27 m4, 217 m x 27 m2,7
Performance  
Speed 34 knots1,2,3,4,5,7
Range 8,000 nautical miles5
Range at 18 knots 8,000 nautical miles2,7
Armament  
Anti-Aircraft 5"4,7, 127 mm4: 124,7
5" twin mounts1, 5" L/40 twin mounts2,3, 127 mm twin mounts2,3: 61,2,3
25 mm4,7: 517, 51 - 894
25 mm triple mounts: 171,2
Anti-Aircraft - 1944 - 1945 5" 28 barrel rocket launchers: 63
Anti-Aircraft - 1945 25 mm7: 237
25 mm triple mounts7: 227
8 barrel rocket launchers7: 67
Aircraft 642, 651,3,7
Armor  
Belt 1" - 5.9"4
25 - 150 mm4
Belt - Machinery 1.8"3,7
Belt - Magazines 5.9"3,7
Deck 2.17"4
55 mm4
Deck - Machinery 1"3,7
Deck - Magazines 2.2"3,7
Engines  
Boilers 83
Kampon7, Kanpon2: 82,7
Shafts 41,2,3,4,7
Turbines Geared1,2,3,7, Geared steam4
HP 152,0001,2,3,4,7
Oil 3,670 tons3,7, 3,750 tons2
  Amagi
Crew  
Displacement 17,460 tons3,5,7
Armament  
Anti-Aircraft 25 mm: 232, 893,7
25 mm triple mounts: 222
  Aso
Crew 1,5003
Physical Characteristics  
Draft / Height 25' 6"1,3
7.76 m3
Performance  
Speed 32 knots1,2,3,4
Armament  
Aircraft 641,3,7
Engines  
HP 104,0001,2,3,4
  Ikoma
Armament  
Aircraft 531,2,3,7
  Kasagi
Displacement 17,260 tons7
Physical Characteristics  
Flight Deck 703' 9"7
Performance  
Range at 18 knots 10,000 nautical miles2
Armament  
Aircraft 641,3,7
  Katsuragi
Crew 1,5003
Displacement 17,260 tons3,5
Physical Characteristics  
Draft / Height 25' 6"1,3
7.76 m3
Flight Deck 703' 9" x 88' 6"3
Performance  
Speed 32 knots1,2,3,4, 33 knots5
Armament  
Anti-Aircraft 25 mm: 762, 893,7
Aircraft 641,3,7
Engines  
HP 104,0001,2,3,4
  Unryu
Armament  
Anti-Aircraft 25 mm: 232
25 mm triple mounts: 222

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. Conway's All the World's Fighting Ships 1922-1946, Robert Gardiner, 1987
  4. The Encyclopedia of Weapons of World War II, Chris Bishop, 1998
  5. Imperial Japanese Navy Aircraft Carriers 1921-45, Mark Stille, 2005
  6. The Imperial Japanese Navy in the Pacific War, Mark E. Stille, 2013
  7. The World's Aircraft Carriers 1914 - 1945, Roger Chesneau, 1986
20th Century American Military History Crucial Site