Etorofu-class escort ship
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|Operators:|| Imperial Japanese Navy
Republic of China Navy
People's Liberation Army Navy
|Preceded by:||Shimushu class|
|Succeeded by:||Mikura class|
|Displacement:||870 long tons (884 t)|
|Length:||77.7 m (255 ft)|
|Beam:||9.1 m (29 ft 10 in)|
|Draught:||3.05 m (10 ft)|
|Speed:||19.7 knots (22.7 mph; 36.5 km/h)|
|Armament:||3 × 120 mm (4.7 in)/45 cal DP guns
4 × 25 mm (0.98 in) AA guns, later up to 15
6 × depth charge throwers
36 × depth charges initially, but later up to 60
1 × 80 mm (3.1 in) mortar
The Japanese called these ships Kaibōkan, "ocean defence ships", (Kai = sea, ocean, Bō = defence, Kan = ship), to denote a multi-purpose vessel. The fourteen ships of the Etorofu class were a major part of Japan's escorts from the middle of World War II. They were denoted "Improved Type A" ships, and were the second class of Kaibōkan. The Etorofus, unlike the Shimushu class, received more emphasis on submarine warfare.
The Etorofu class was initially armed with thirty-six depth charges and would later rise to 60 depth charges with an 8 cm trench mortar and six depth charge throwers. The rise of aircraft also saw the number of AA machine guns increase to 15. They would receive Type 22 and Type 13 radars and Type 93 sonar in 1943-1944.
Eight of the fourteen ships were sunk during the war.
Ships in class
The ships of the class are listed below.
- Etorofu (択捉)
- Hirato (平戸) (sunk)
- Tsushima (対馬)
- Fukae (福江)
- Matsuwa (松輪) (sunk)
- Mutsure (六連) (sunk)
- Sado (佐渡) (sunk)
- Oki (隠岐): entered service with ROCN as Gu An (固安) after World War II, then in PLAN service as Chang Bai (长白).
- Manju (満珠)
- Kanju (干珠) (sunk)
- Iki (壱岐) (sunk)
- Amakusa (天草) (sunk)
- Wakamiya (若宮) (sunk)
- Kasado (笠戸).
- 25 May 1943, Notice No. 121, Named three destroyers, three submarines, two coast defence ships, two submarine chasers, and one auxiliary vessel., Minister's Secretariat, Ministry of the Navy.
- 5 February 1943, Notice No. 16, Named one destroyer, six submarines, one coast defence ship, one minesweeper, one auxiliary vessel, and one auxiliary boat., Minister's Secretariat, Ministry of the Navy.
- Combined Fleet: Etorofu (Retrieved November 17, 2007)
- Worth, Richard, Fleets of World War II, Da Capo Press (2001), ISBN 0-306-81116-2