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Japan's Imperial Navy flag

Japan's Oyodo cruiser

Photos

IJN Oyodo capsized in Kure on July 28, 1945:
IJN Oyodo capsized in Kure on July 28, 1945
US Naval Museum, 1977-031-074-084

Design

The Oyodo was to be an improved Agano class cruiser.1,2 It was ordered under the 1939 Program / 1939 4th Replenishment Program4,5.2

The Oyodo was intended to be used as a flagship of destroyer and submarine units.1,2,5 However, by the time Oyodo was completed Japanese submarines were primarily being used to resuppy isolated island bases.2

Aircraft

In place of the aft turrets there was a hanger that could hold six E15K1 "Norm"4,5 aircraft.1,2,5 These were to be a new model of aircraft that wasn't built so instead only two floatplanes were carried.1,2,5

Armament

When the Mogami class cruisers were upgraded to 8" gun, their former 6.1" turrets were used on the Oyodo.1,2,3,5

Ships

IJN Oyodo

  • Manufacturer: Kure Dock Yard4, Kure Navy Yard1,2,3,5,6
  • December 6, 19396
  • February 14, 1941: Laid down.2,3,4,5,6
  • March 10, 1942: Named Oyodo.6
  • April 2, 1942: Launched.1,2,3,4,5,6
  • February 28, 1943: Completed.2,3,4,5,6
  • July 1943: Rabaul.3
  • August 1943 - February 1944: Truk.3
  • January 1, 1944: Minor damage from carrier aircraft, from TG50.24, while returning to Truk from supply mission to Kavieng.3,4
  • February 1944: Palau.4
  • March 1944: Singapore.4
  • 1943 - 1944, Spring 19444, March 19443: Refit at Yokosuka.2,4 Large catapult replaced by smaller one.2,3 Hanger turned into crew quarters for headquarters staff.1,2,3,4 Six 25 mm triple mounts and eleven 25 mm guns added.3
  • March 1944, March - September 19443: Flagship Combined Fleet.2,3
  • Early October 1944: Six 25 mm guns added.3
  • October 1944: Philippines.4
  • October 20, 1944: Admiral Ozawa's Northern Force.4 Battle of Leyte Gulf.3,4 Hit by two rockets and one near miss.3 Eight crewman killed.3
  • Late October 1944: Four 25 mm guns added.3
  • Late 1944, December 26, 19443: Damaged from two bombs in Philippine Sea.2 Singapore for repairs.3
  • 1945: 52 25 mm guns total.5
  • February 1945: Japan.4 Sailed to Japan with Ise and Hyuga.2,3 25 American submarines hunted them but they were not intercepted.3
  • March 19, 1945: Severely damaged by three3 / five bombs from TF58.2,4
  • July 24, 1945: Hit by five bombs from TF38.3,4
  • July 28, 1945: Sunk.1,2,3,4,5 Hit by aircraft from TF38 in Kure.2 Heavily damaged by four bombs and near misses.3,5

1372, IJN Niyoyodo1,5 , IJN Niyodo6, 8105, 8115, 8125, 8135, 8145, 50375, 50385

  • Manufacturer: Kure Navy Yard6
  • Cancelled.1,2,5

Specifications

  Oyodo
Crew 7763
Displacement 8,164 tons1,2,4,5, 10,417 tons3
Displacement - Loaded 11,433 tons3,4,5,6
Physical Characteristics  
Length 629' 9"3, 630'1,2, 630' 3"4,5
192 m2,6, 192.1 m4,5
Length - Water Line 620'2, 620' 1"4,5
189 m2,4,5
Length - Between Perpendiculars 590' 6"1,2, 590' 7"4,5
180 m2,4,5,6
Beam 54' 6"1,2,3,4,5
16.62,4,5,6
Draft / Height 19' 6"2,3,4,5, 20'1
5.95 m2,4,5
Performance  
Speed 35 knots2,3,4,5,6, 36 knots1
Range at 18 knots 10,000 nautical miles3, 10,315 nautical miles3,6, 10,600 nautical miles4, 10,619 nautical miles2
Armament 6.1" triple turrets1,3,4, 6.1" / 15.5 cm L/55 triple turrets2, 6.1" L/60 triple turrets5, 15.5 cm L/60 Type 3 triple turrets6: 21,2,3,4,5,6
Anti-Aircraft 3.9" twin mounts1,3, 3.9" / 10 cm L/65 twin mounts2, 3.9" L/65 twin mounts5, 3.9" L/65 Type 98 twin mounts4, 10 cm L/65 Type 98 HA twin mounts6: 41,2,3,4,5,6
25 mm1,2,4,5: 121,2,4,5
25 mm triple mounts3, 25 mm Type 96 triple mounts6: 63,6
Aircraft 21,2,3,4,5
Armor  
Belt - Machinery 1.2" - 3"3, 2"1,2
3 cm - 7.5 cm6, 5 cm2
Belt - Main 2"2,4,5, 2.4"3
3 cm - 7 cm6, 5 cm2
Control Tower 2 cm - 4 cm6
Deck 1.2"3, 1" - 2"1, 1.4"5, 1.5"4, 2"2
5 cm2
Magazines 2"1,3
Turrets 1"4,5, 2.5"2, 2.5" - 2.75"1
6.3 cm2
Engines  
Boilers 65
Kanpon: 62,4,6
Shafts 41,2,4,5
Turbines Geared1,2,4,5, Kanpon geared6
HP 110,0002,3,4,5, 110,4301
Oil 2,360 tons2,4, 2,445 tons6

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. The Imperial Japanese Navy in the Pacific War, Mark E. Stille, 2013
  4. Cruisers of World War Two An International Encyclopedia, M. J. Whitley, 1995
  5. Conway's All the World's Fighting Ships 1922-1946, Robert Gardiner, 1987
  6. Japanese Cruisers of the Pacific War, Eric Lacroix, Linton Wells II, 1997
20th Century American Military History Crucial Site