Japanese submarine chaser Cha-231

Cha-231 or No. 231 (Japanese: 第二百三十一號驅潜特務艇) was a No.1-class auxiliary submarine chaser of the Imperial Japanese Navy that served during World War II.

History
Imperial Japanese Navy
NameCha-231
BuilderYamanishi Shipbuilding Co., Ltd., Ishinomaki
Laid down30 August 1944
Launched1944
Completed7 December 1944
Commissioned7 December 1944
HomeportSasebo
Fatetransferred to Japan Maritime Safety Agency, 1 January 1947
History
Japan Maritime Safety Agency
Acquired1 January 1947
RenamedShiratori (MS-17)
Fatetransferred to Japan Maritime Self-Defense Force, 1 July 1954
History
Japan Maritime Self-Defense Force
Acquired1 July 1954
Decommissioned31 March 1962
RenamedShiratori (MS-17)
Fateunknown
General characteristics
Class and typeNo.1-class Submarine chaser
Displacement130 long tons (132 t) standard[1]
Length29.20 m (95 ft 10 in) overall
Beam5.65 m (18 ft 6 in)
Draught1.97 m (6 ft 6 in)
Propulsion
  • 1 × intermediate diesel
  • shingle shaft, 400 bhp
Speed11.0 knots (12.7 mph; 20.4 km/h)
Range1,000 nmi (1,900 km) at 10.0 kn (11.5 mph; 18.5 km/h)
Complement32
Armament
  • 1 × 13.2mm machine gun
  • 22 × depth charges
  • 1 × dunking hydrophone
  • 1 × simple sonar

History

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She was laid down on 30 August 1944 at the Ishinomaki shipyard of Yamanishi Shipbuilding Co., Ltd. (株式會社山西造船鐵工所) and launched later in the same year.[1][2] She was fitted with armaments at the Yokosuka Naval Arsenal; completed and commissioned on 7 December 1944;[2] and assigned to the Sasebo Defense Force, Sasebo Naval District.[2] Cha-231 survived the war.[2]

On 1 December 1945, she was demobilized and enrolled as a minesweeper by the occupation forces.[2] On 1 January 1947, she was assigned to the Japan Maritime Safety Agency and on 20 August 1948 she was designated minesweeper MS-17.[2] On 1 December 1951, she was renamed Shiratori (しらとり).[2] On 1 July 1954, she was transferred to the newly created Japan Maritime Self-Defense Force.[2] She was delisted on 31 March 1962.[2]

References

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  1. ^ a b Toda, Gengoro S. (21 September 2019). "驅潜特務艇 (Cha - Stats)". Imperial Japanese Navy - Tokusetsukansen (in Japanese).
  2. ^ a b c d e f g h i Toda, Gengoro S. "第二百三十一號驅潜特務艇の艦歴 (No. 231 submarine chaser - Ship History)". Imperial Japanese Navy -Tokusetsu Kansen (in Japanese).