Hiburi-class escort ship
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Daitō or Shōnan
|Name:||Hiburi class escort ship|
|Builders:||Hitachi Zōsen Corporation|
|Preceded by:||Mikura class|
|Succeeded by:||Ukuru class|
|Planned:||11 (converted from 3 of the Mikura class, and 8 of the Ukuru class)|
|Displacement:||940 long tons (955 t) standard|
|Length:||78.77 m (258 ft 5 in) overall|
|Beam:||9.10 m (29 ft 10 in)|
|Draught:||3.06 m (10 ft 0 in)|
|Speed:||19.5 knots (22.4 mph; 36.1 km/h)|
|Range:||5,000 nmi (9,300 km) at 16 kn (18 mph; 30 km/h)|
- In 1943, the Japanese Navy General Staff (Gunreibu) promoted the building of Escort ship Type-A, the Etorofu class and Escort ship Type-B, the Mikura class. However, the Navy General Staff also noted that too many man-hours of work were needed for their building.
- The Navy Technical Department (Kampon) used the Ukuru's basic designs for the new drawings. It was a chimera of Mikura and Ukuru classes.
- The new drawings had the following characteristic.
- Armaments and under waterline designs were same as Mikura.
- Everything else was same as in the Ukuru.
- The Kampon estimated man-hours for building will be between 42,000 to 40,000.
- The new drawing was sent to the Hitachi Zōsen Corporation, Sakurajima Shipyard. The Mikura class and the Ukuru class that had not been started were converted to the Hiburi class. The Hitachi Zōsen build all of the Hiburi class vessels.
Ships in class
|Ship #||Ship||Laid down||Launched||Completed||Fate|
|328||Hiburi (日振)||03-01-1944||10-04-1944||27-06-1944||Sunk by USS Harder at west of Manila, 22-08-1944.|
|333||Daitō (大東)||23-02-1944||19-05-1944||07-08-1944||Sunk by naval mine at Tsushima Strait, 16-11-1945.|
|339||Shōnan (昭南)||23-02-1944||24-06-1944||13-07-1944||Sunk by USS Hoe at south of Hainan Island, 25-02-1945.|
|5252||Kume (久米)||26-05-1944||15-08-1944||25-09-1944||Sunk by USS Spadefish at Yellow Sea , 28-01-1945.|
|5254||Ikuna (生名)||30-06-1944||04-09-1944||15-10-1944||Decommissioned on 30-11-1945. Transferred to Meteorological Agency 26-12-1947, and renamed Ikuna-maru. Transferred to Maritime Safety Agency 01-01-1949, and renamed Ojika (PS-102). Decommissioned on 25-05-1963.|
|5257||Shisaka (四阪)||21-08-1944||31-10-1944||15-12-1944||Decommissioned on 15-09-1945. Surrendered to Republic of China on 06-07-1947, and renamed Huian. Escape to People's Liberation Army 23-04-1949. Sunk by aircraft at Yanziji, 28-04-1949. Repairs were completed on 24-12-1953, and given the pennant number 218. Decommissioned in 1990.|
|5259||Sakito (崎戸)||07-09-1944||29-11-1944||10-01-1945||Decommissioned on 20-11-1945. Scrapped January 1947.|
|5263||Mokuto (目斗)||05-11-1944||07-01-1945||19-02-1945||Sunk by naval mine at Kanmon Straits, 04-04-1945.|
|5264||Habuto (波太)||03-12-1944||28-02-1945||07-04-1945||Decommissioned on 23-10-1945. Surrendered to United Kingdom on 16-07-1947, later scrapped.|
|5265||Ōtsu (大津)||12-01-1945||10-05-1945||Not completed until the end of the war (95%). Scrapped on 25-03-1948.|
|5266||Tomoshiri (友知)||05-03-1945||Not completed until the end of the war (20%). Scrapped on 23-10-1947.|
- Classification of the Kaibōkan classes in IJN official documents
- The Shimushu, Etorofu, Mikura, Hiburi and Ukuru were classed in the Shimushu class.
- The IJN changed their classification on 5 June 1944, because the shipyards and commanders were confused.
- The Escort ship Type-B and Modified Type-B were combined to the Escort ship Type-A, and Type-Bs became extinct thereby.
|Before 5 June 1944||
||And after 5 June 1944|
|Plan names||Official class names||Common class names||Plan name||Official class names||Common class names|
|Type-A||Shimushu class||Shimushu class||Type-A||Shimushu class||Shimushu class|
|Etorofu class||Etorofu class|
|Type-B||Mikura class||Mikura class||Mikura class|
|Hiburi class||Hiburi class|
|Modified Type-B||Ukuru class||Ukuru class||Ukuru class|
|Type-C||No.1 class||No.1 class||Type-C||No.1 class||No.1 class|
|Type-D||No.2 class||No.2 class||Type-D||No.2 class||No.2 class|
(changes of the equipments, and under waterline designs)
- Shimushu class escort ship
- Etorofu class escort ship
- Mikura class escort ship
- Ukuru class escort ship
- Type C escort ship
- Type D escort ship
- Destroyer escort
- Tacoma class frigate
- Flower class corvette
- The vessel on the photograph has been identified as two different vessels.
First option: Daitō in August 1944, by Ships of the World special issue Vol.45, Escort Vessels of the Imperial Japanese Navy.
Second option: Shōnan in July 1944, by the Yamato Museum.
- The 11 vessels described in this article are classified to the Ukuru class escort ship in many books, because the Hiburi class closely resembles the Ukuru class. The IJN's official documents, however, call them the Mikura class.
- This value was reduced to around 35,000 man-hours by an effort of the shipyard.
- Therefore Hitachi Zōsen did not participate in building of the Ukuru class.
- "Tomoshiri Island".
- "Rekishi Gunzō"., History of Pacific War Vol.51, The truth histories of the Imperial Japanese Vessels Part.2, Gakken (Japan), June 2002, ISBN 4-05-602780-3
- Ships of the World special issue Vol.45, Escort Vessels of the Imperial Japanese Navy, "Kaijinsha"., (Japan), February 1996
- Model Art Extra No.340, Drawings of Imperial Japanese Naval Vessels Part-1, "Model Art Co. Ltd.". (Japan), October 1989
- The Maru Special, Japanese Naval Vessels No.28, Japanese escort ships, "Ushio Shobō". (Japan), June 1979