W-19-class minesweeper

The No.19 class minesweeper (第十九号型掃海艇,, Dai Jūkyū Gō-gata Sōkaitei) was a class of minesweepers of the Imperial Japanese Navy (IJN), serving during World War II. 70 vessels were planned under the Maru 4 Programme (Ship # 164–169), Maru Kyū Programme (Ship # 410–437) and Kai-Maru 5 Programme (Ship # 5301–5336), however, only 17 vessels were completed.

No.29 on 22 October 1943
Class overview
NameNo.19 class minesweeper
Builders
Operators
Preceded byNo.7 class
Cost2,660,000 JPY (in 1939)
Built1940 – 1944
In commission1941 – 1945 (IJN)
Planned70
Completed17
Cancelled53
Lost15
Retired2
General characteristics
Displacement648 long tons (658 t) standard
Length72.50 m (237 ft 10 in) overall
Beam7.85 m (25 ft 9 in)
Draught2.61 m (8 ft 7 in)
Propulsion
  • 2 × Kampon geared turbines
  • 2 × Kampon mix-fired boilers
  • 2 shafts, 3,850 shp
Speed20.0 knots (23.0 mph; 37.0 km/h)
Range2,000 nmi (3,700 km) at 14 kn (16 mph; 26 km/h)
Complement98
Armament
No. 20

Background
  • Project number I4B. Improved model of the No.7-class. The IJN gave them a turret of 55 degrees gun elevation,[1] because the IJN wanted to attack the strong point of behind the hill to them. And it was not useful in the Pacific War very much.
  • And after the Maru Kyū Programme vessels abolished double-curvature bow for a mass production and changed bow shape.

Ships in class
Ship # Ship Builder Laid down Launched Completed Fate
164 No.19[2] Tōkyō Ishikawajima Shipyard 17 September 1940 18 February 1941 31 May 1941 Sunk by air raid at the mouth of the Cagayan River on 10 December 1941. Removed from naval ship list on 30 November 1945.
165 No.20 Tōkyō Ishikawajima Shipyard 19 March 1941 17 September 1941 15 December 1941 Sunk by USS Trepang at Yellow Sea 34°16′N 123°37′E on 5 May 1945. Removed from naval ship list on 25 May 1945.
166 No.21 Harima Shipyard 20 September 1941 28 February 1942 29 June 1942 Decommissioned on 25 October 1945. Surrendered to United States on 1 October 1947. Sunk as target at 35°19′N 123°31′E on 7 October 1947.
167 No.22 Tōkyō Ishikawajima Shipyard 6 October 1941 28 April 1942 31 July 1942 Sunk by air raid at Palau on 11 November 1944. Removed from naval ship list on 10 January 1945.
168 No.23 Tōkyō Ishikawajima Shipyard 5 May 1942 13 January 1943 31 March 1943 Decommissioned on 30 November 1945. Surrendered to Soviet Union on 3 October 1947.
169 No.24 Harima Shipyard 5 May 1942 16 September 1942 25 January 1943 Sunk by air raid at Tsugaru Strait on 15 July 1945. Removed from naval ship list on 10 August 1945.
410 No.25 Kure Naval Arsenal 30 April 1943 Sunk by air raid at Chichi-jima on 4 July 1944. Removed from naval ship list on 10 September 1944.
411 No.26 Mitsubishi, Yokohama Shipyard 31 March 1943 Sunk by air raid at Rabaul on 17 February 1944. Removed from naval ship list on 30 April 1944.
412 No.27 Harima Shipyard 10 June 1942 23 February 1943 31 July 1943 Sunk by USS Runner off Yamada 39°20′N 142°07′E on 10 July 1945. Removed from naval ship list on 15 September 1945.
413 No.28 Kure Naval Arsenal 28 June 1943 Sunk by USS Jack at Celebes Sea 01°25′N 123°29′E on 29 August 1944. Removed from naval ship list on 10 October 1944.
414 No.29 Tōkyō Ishikawajima Shipyard 22 October 1943 Struck a naval mine and sunk off Shimonoseki on 7 May 1945. Removed from naval ship list on 10 August 1945.
415 No.30 Tōkyō Ishikawajima Shipyard 5 February 1944 Sunk by air raid at Ormoc Bay on 11 November 1944. Removed from naval ship list on 10 January 1945.
416-417 Cancelled in 1945.
418 No.33 Mitsubishi, Yokohama Shipyard 31 July 1943 Sunk by air raid at Onagawa Bay on 9 August 1945. Removed from naval ship list on 15 September 1945.
419 No.34 Tōkyō Ishikawajima Shipyard 29 May 1944 Sunk by USS Chub at Java Sea 06°18′S 116°14′E on 21 May 1945. Removed from naval ship list on 10 June 1945.
420-422 Cancelled in 1945.
423 No.38 Fujinagata Shipyards 10 June 1944 Sunk by USS Atule at Bashi Channel 21°21′N 119°45′E on 19 November 1944. Removed from naval ship list on 10 March 1945.
424 No.39 Harima Shipyard 3 December 1943 24 February 1944 27 May 1944 Sunk by USS Threadfin at Yellow Sea 35°01′N 125°42′E on 20 July 1945. Removed from naval ship list on 15 September 1945.
425 Cancelled in 1945.
426 No.41 Fujinagata Shipyards 17 July 1944 Sunk by air raid at Hainan on 4 January 1945. Removed from naval ship list on 15 September 1945.
427-437 Cancelled in 1945.
5301-5336 Cancelled in 1944.

Photo
  • No.21 on 16 September 1945 at Qingdao
    No.21 on 16 September 1945 at Qingdao

Footnotes
  1. 11th Year Type 120 mm (4.7 in) naval gun, Type-M turret. No.7-class equipped the 3rd Year Type 120 mm naval gun, Type-G turret (33 degrees gun elevation).
  2. Minesweeper No.19 (第十九号掃海艇, Dai 19 Gō Sōkaitei). The same shall apply hereinafter.

Bibliography
  • Dodson, Aidan & Cant, Serena (2020). Spoils of War: The Fate of Enemy Fleets after Two World Wars. Barnsley, UK: Seaforth Publishing. ISBN 978-1-5267-4198-1.
  • "Rekishi Gunzō"., History of Pacific War Vol.51 The truth histories of the Japanese Naval Vessels Part-2, Gakken (Japan), August 2005, ISBN 4-05-604083-4
  • 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.50, Japanese minesweepers and landing ships, "Ushio Shobō". (Japan), April 1981
  • 50 year History of Harima Zōsen, Harima Zōsen Corporation, November 1960
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