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Ryoyo Maru (1931)

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Title: Ryoyo Maru (1931)  
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Subject: Kawasaki Heavy Industries, Invasion of Buna–Gona
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Ryoyo Maru (1931)

Name: Ryoyo Maru
Builder: Kawasaki Dockyard Company, Kobe
Laid down: 3 March 1930[1]
Launched: 25 September 1930[1]
Commissioned: 15 January 1931[1]
Fate: Sunk by USS Tautog
Status: Shipwreck
General characteristics
Displacement: 5,974 gross ton
Length: 415 feet (126 m)[2]
Beam: 56 feet (17 m)
Draught: 31.8 feet (9.7 m)

The Ryoyo Maru (良洋丸 Ryōyō Maru) was a 5,974 gross ton passenger ship that was built by Kawasaki Dockyard Company, Kobe, for Tōyō Kisen Kabushiki Kaisha, launched in 1931. She was requisitioned by the Imperial Japanese Army and fitted out as a fast troop transport.

She was part of the invasion fleet that landed troops during the invasion of Ambon on 30 January 1942, and part of the invasion fleet at Buna and Gona.[3]

On 4 March 1944, she was damaged when struck by a large wave and driven aground off Matsuwa Jima, in the Kuril Islands. Ryoyo Maru was anchored in a harbour along the Kuril Islands, when she was struck by a torpedo from USS Tautog on 2 May. She settled in 24 feet (7.3 m) of water, decks awash at 48-04N, 153-16E.[4]


  1. ^ a b c
  2. ^
  3. ^
  4. ^ Blair, p. 596.


  • Blair, Clay, Jr. Silent Victory. Philadelphia: Lippincott, 1975.

See also

External links

  • Chronological List of Japanese Merchant Vessel Losses
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