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No.1-class auxiliary submarine chaser
IJN auxiliary submarine chaser No1 class 1945
No.1 class on 10 January 1945
Class overview
Name: No.1-class auxiliary submarine chaser
Builders: Hull
Ichikawa Shipyard
Gōriki Shipyard
Koyanagi Shipyard
Saga Iron Works
Shikoku Dock Company
Jinen Iron Works
Tokushima Limited Sipyard
Nishii Shipyard
Hayashikane Heavy Industries
Fukuoka Iron Works
Fukushima Iron Works
Funaya Iron Works
Miho Shipyard
Murakami Shipyard
Yamanishi Iron Works
Yonago Shipyard
Fitted with armaments
Kure Naval Arsenal
Maizuru Naval Arsenal
Sasebo Naval Arsenal
Yokosuka Naval Arsenal
Operators: Naval Ensign of Japan Imperial Japanese Navy
Ensign of the Japanese Coast Guard Japan Maritime Safety Agency
Naval Ensign of Japan Japan Coastal Safety Force (later Japan Maritime Self-Defence Force)
Flag of Japan Government of Japan
Flag of the Republic of China Republic of China Navy
Naval Ensign of China People's Liberation Army Navy
Built: 1942 (?)–1945
In commission: 1943–1971
Planned: 200
Completed: 200
Lost: 81
Retired: 119
General characteristics
Type: Submarine chaser
Displacement: 130 long tons (132 t) standard
Length: 29.20 m (95 ft 10 in) overall
Beam: 5.65 m (18 ft 6 in)
Draught: 1.97 m (6 ft 6 in)
Propulsion: 1 × intermediate diesel
shingle shaft, 400 bhp
Speed: 11.0 knots (12.7 mph; 20.4 km/h)
Range: 1,000 nmi (1,900 km) at 10.0 kn (11.5 mph; 18.5 km/h)
Complement: 32
Armament: • 1 × 7.7 mm machine gun
• 22 × depth charges
• 1 × dunking hydrophone
• 1 × simple sonar

The No.1 class auxiliary submarine chaser (第一号型駆潜特務艇, Dai Ichi Gō-gata Kusen-Tokumutei?) was a class of submarine chasers of the Imperial Japanese Navy (IJN), serving during World War II. 200 vessels were built under the Maru Kyū Programme (Ship # 500–599) and the Maru Sen Programme (Ship # 2001–2100).

BackgroundEdit

  • In 1939, the IJN wanted the point-defence subchaser for defence of their naval bases. In 1940, they built small prototype submarine chasers (No.1182 and No.1183) from a standard wooden fishing boat.
  • The IJN made a try of them, and they confirmed that it was effective subchaser. In 1941, the IJN ordered 100 vessels.
  • In the wartime, their performance were good. However, they were always troubled by insect damage, because their hull was wood.
  • They who survived war played an active part for minesweeping of magnetic mines.

Ships in classEdit

Maru Kyū Programme vessels. (Ship # 500–599)

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survived war. Transferred to Japan Maritime Safety Agency as patrol boat and renamed Chidori (PS-18) on 1 May 1948. Later renumbered PS-134. Discarded 1960.[1]
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survived war. Transferred to Japan Maritime Safety Agency and renamed Kiji (PB-20) on 1 May 1948. Renumbered NS 81 in 1953. Discarded 1959.[1]

Maru Sen Programme vessels. (Ship # 2001–2100)

No.1-class AuxSubchasers-1946

No.169, No.173, No.99 and No.234 in 1946

ReferencesEdit

  1. 1.0 1.1 1.2 1.3 1.4 1.5 1.6 1.7 Gardiner and Chumbley 1995, p. 221.

BibliographyEdit

  • Gardiner, Robert and Stephen Chumbley. Conway's All The World's Fighting Ships 1947–1995. Annapolis, Maryland, USA: Naval Institute Press, 1995. ISBN 1-55750-132-7.
  • Ships of the World special issue Vol.45, Escort Vessels of the Imperial Japanese Navy, Kaijinsha, (Japan), February 1996
  • The Maru Special-Japanese Naval Vessels No.49, Japanese submarine chasers, Ushio Shobō (Japan), March 1981


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