No.1 class auxiliary minesweeper
Encyclopedia
The was a class of minesweepwes of the Imperial Japanese Navy
(IJN), serving during World War II
. 22 vessels were planned and built in 1941–43 under the Maru Rin Programme
(Ship # 251–256) and the Maru Kyū Programme
(Ship # 480–495).
| width="4%" | Ship #
| width="9%" | Ship
| width="10%" | Builder
| width="8%" bgcolor= | Laid down
| width="8%" bgcolor= | Launched
| width="8%" bgcolor= | Completed
| width="25%" bgcolor= | Fate
|-
| 251
| Aux. Minesweeper No.1
| Ōsaka Iron Works
| 30 June 1941
| 9 November 1941
| 31 January 1942
| Sunk by air raid off Savo Island
on 4 May 1942. Decommissioned on 25 May 1942.
|-
| 252
| Aux. Minesweeper No.2
| Ōsaka Iron Works
| 30 June 1941
| 9 November 1941
| 28 February 1942
| Sunk by air raid off Savo Island on 4 May 1942. Decommissioned on 25 May 1942.
|-
| 253
| Aux. Minesweeper No.3
| Ōsaka Iron Works
| 20 June 1941
| 31 March 1942
| 30 May 1942
| MIA on 24 July 1945. Decommissioned on 3 May 1947.
|-
| 254
| Aux. Minesweeper No.4
| Naniwa Dock Company
| 20 June 1941
| 19 March 1942
| 29 June 1942
| Sunk by air raid off Timor Island 08°38′S 125°26′E on 19 July 1944. Decommissioned on 10 September 1944.
|-
| 255
| Aux. Minesweeper No.5
| Ōsaka Iron Works
| 20 June 1941
| 31 March 1942
| 30 June 1942
| Survived war at Chuuk Islands. Decommissioned in 1947.
|-
| 256
| Aux. Minesweeper No.6
| Naniwa Dock Company
| 20 February 1942
| 18 July 1942
| 30 October 1942
| Sunk by air raid at Yamada Bay
on 10 August 1945. Decommissioned on 20 October 1945.
|-
| 480
| Aux. Minesweeper No.7
| Ōsaka Iron Works
| 10 February 1942
| 16 July 1942
| 28 December 1942
| Survived war at Singapore
. Surrendered to United Kingdom in July 1946. Decommissioned in 1947.
|-
| 481
| Aux. Minesweeper No.8
| Ōsaka Iron Works
| 10 February 1942
| 16 July 1942
| 31 January 1943
| Sunk by air raid at Visayan Sea
11°30′N 123°20′E on 21 October 1944. Decommissioned on 10 May 1945.
|-
| 482
| Aux. Minesweeper No.9
| Namura Shipbuilding
| 20 March 1942
| 15 August 1942
| 30 November 1942
| Survived war at Singapore
. Surrendered to United Kingdom in July 1946. Decommissioned in 1947.
|-
| 483
| Aux. Minesweeper No.10
| Sanoyasu Dock Company
| 3 March 1942
| 19 August 1942
| 30 November 1942
| Sunk by USN destroyer off Vigan on 12 January 1945. Decommissioned on 10 May 1945.
|-
| 484
| Aux. Minesweeper No.11
| Naniwa Dock Company
| 6 April 1942
| 30 August 1942
| 24 February 1943
| Survived war. Decommissioned on 30 November 1945. Surrendered to United Kingdom on 14 November 1947.
|-
| 485
| Aux. Minesweeper No.12
| Naniwa Dock Company
| 7 September 1942
| 27 December 1942
| 31 March 1943
| Survived war. Decommissioned on 30 November 1945. Surrendered to Soviet Union on 3 October 1947.
|-
| 486
| Aux. Minesweeper No.13
| Hitachi Zōsen
| 21 July 1942
| 25 January 1943
| 14 April 1943
| Survived war. Decommissioned on 30 November 1945. Surrendered to United States on 1 October 1947. Sunk as target at 35°10′N 123°52′E on 12 February 1948.
|-
| 487
| Aux. Minesweeper No.14
| Hitachi Zōsen
| 21 July 1942
| 25 January 1943
| 14 May 1943
| Survived war. Decommissioned on 30 November 1945. Surrendered to Republic of China on 3 October 1947 and renamed Saolei 201. Escape to People's Liberation Army on 17 February 1949 and renamed Qiufeng. Decommissioned in 1976.
|-
| 488
| Aux. Minesweeper No.15
| Namura Shipbuilding
| 29 August 1942
| 25 January 1943
| 30 April 1943
| Survived war. Decommissioned on 30 November 1945.
|-
| 489
| Aux. Minesweeper No.16
| Sanoyasu Dock Company
| 24 August 1942
| 19 December 1942
| 31 March 1943
| Survived war. Decommissioned on 30 November 1945. Surrendered to United Kingdom on 14 November 1947.
|-
| 490
| Aux. Minesweeper No.17
| Naniwa Dock Company
| 7 September 1942
| 12 March 1943
| 28 May 1943
| Survived war. Decommissioned on 30 November 1945. Surrendered to Soviet Union on 3 October 1947.
|-
| 491
| Aux. Minesweeper No.18
| Namura Shipbuilding
| 15 February 1943
| 16 May 1943
| 31 July 1943
| Survived war. Decommissioned on 30 November 1945. Surrendered to United States on 3 October 1947. Sunk as target at 35°16′N 123°20′E on 21 January 1948.
|-
| 492
| Aux. Minesweeper No.19
| Sanoyasu Dock Company
| 25 December 1942
| 25 March 1943
| 30 June 1943
| Survived war. Decommissioned on 30 November 1945. Surrendered to Republic of China on 3 October 1947 and renamed Saolei 202. Renamed Jiangyong (YP-542) in 1952. Decommissioned in 1968. Scrapped.
|-
| 493
| Aux. Minesweeper No.20
| Naniwa Dock Company
| 5 February 1943
| 27 April 1943
| 31 July 1943
| Survived war. Decommissioned on 30 November 1945. Surrendered to Soviet Union on 3 October 1947.
|-
| 494
| Aux. Minesweeper No.21
| Hitachi Zōsen
| 16 October 1942
| 11 March 1943
| 15 June 1943
| Survived war. Decommissioned on 30 November 1945. Surrendered to United States on 1 October 1947. Sunk as target at 35°24′N 123°56′E on 30 October 1947.
|-
| 495
| Aux. Minesweeper No.22
| Namura Shipbuilding
| 20 May 1943
| 5 July 1943
| 20 October 1943
| Survived war. Decommissioned on 30 November 1945. Surrendered to Republic of China on 3 October 1947 and renamed Saolei 203. Renamed Jiangyi (YP-541) in 1952. Decommissioned in 1968. Scrapped.
|-
Imperial Japanese Navy
The Imperial Japanese Navy was the navy of the Empire of Japan from 1869 until 1947, when it was dissolved following Japan's constitutional renunciation of the use of force as a means of settling international disputes...
(IJN), serving during World War II
World War II
World War II, or the Second World War , was a global conflict lasting from 1939 to 1945, involving most of the world's nations—including all of the great powers—eventually forming two opposing military alliances: the Allies and the Axis...
. 22 vessels were planned and built in 1941–43 under the Maru Rin Programme
Temporal Naval Armaments Supplement Programme (Japan, 1940)
The is one of the armaments expansion plan of the Imperial Japanese Navy .-Background:In October 1940, the IJN schemed building of the submarines and auxiliary vessels because there was a shortage of them.-Table of vessels:-References:...
(Ship # 251–256) and the Maru Kyū Programme
Rapid Naval Armaments Supplement Programme (Japan, 1941)
The was one of the armaments expansion plan of the Imperial Japanese Navy .-Background:In August 1941, the IJN started building warships for war...
(Ship # 480–495).
Background
- In 1938, the IJN was troubled by drifting contact mines from the National Revolutionary ArmyNational Revolutionary ArmyThe National Revolutionary Army , pre-1928 sometimes shortened to 革命軍 or Revolutionary Army and between 1928-1947 as 國軍 or National Army was the Military Arm of the Kuomintang from 1925 until 1947, as well as the national army of the Republic of China during the KMT's period of party rule...
at Yangtze RiverYangtze RiverThe Yangtze, Yangzi or Cháng Jiāng is the longest river in Asia, and the third-longest in the world. It flows for from the glaciers on the Tibetan Plateau in Qinghai eastward across southwest, central and eastern China before emptying into the East China Sea at Shanghai. It is also one of the...
. The IJN dispatched a lot of minesweepers and paravane equipment vessels (minelayers, torpedo boats and more) to Yangtze River, but they were damaged by a drifting contact mines too. - The IJN wanted a small and light-footed minesweepers. The IJN already commandeered a lot of fishing boats and gave minesweeping operations to them. The Kampon designed minesweeper similar to the trawlers. It is No.1-class auxiliary minesweeper (Project Number I5).
- They have begun to be commissioned from 1942. However, all of them was dispatched to Pacific front, and they were no match for the magnetic mine because their hull was made by steel.
Ships in class
{| class="wikitable" width="75%"| width="4%" | Ship #
| width="9%" | Ship
| width="10%" | Builder
| width="8%" bgcolor= | Laid down
| width="8%" bgcolor= | Launched
| width="8%" bgcolor= | Completed
| width="25%" bgcolor= | Fate
|-
| 251
| Aux. Minesweeper No.1
| Ōsaka Iron Works
| 30 June 1941
| 9 November 1941
| 31 January 1942
| Sunk by air raid off Savo Island
Savo Island
Savo Island is a volcanic island in the Solomon Islands group in the South Pacific ocean. It is located to the northeast of the northern tip of Guadalcanal Island at . Politically, Savo Island is a part of the Solomons' Central Province. The indigenous language of Savo is the Savosavo language.The...
on 4 May 1942. Decommissioned on 25 May 1942.
|-
| 252
| Aux. Minesweeper No.2
| Ōsaka Iron Works
| 30 June 1941
| 9 November 1941
| 28 February 1942
| Sunk by air raid off Savo Island on 4 May 1942. Decommissioned on 25 May 1942.
|-
| 253
| Aux. Minesweeper No.3
| Ōsaka Iron Works
| 20 June 1941
| 31 March 1942
| 30 May 1942
| MIA on 24 July 1945. Decommissioned on 3 May 1947.
|-
| 254
| Aux. Minesweeper No.4
| Naniwa Dock Company
| 20 June 1941
| 19 March 1942
| 29 June 1942
| Sunk by air raid off Timor Island 08°38′S 125°26′E on 19 July 1944. Decommissioned on 10 September 1944.
|-
| 255
| Aux. Minesweeper No.5
| Ōsaka Iron Works
| 20 June 1941
| 31 March 1942
| 30 June 1942
| Survived war at Chuuk Islands. Decommissioned in 1947.
|-
| 256
| Aux. Minesweeper No.6
| Naniwa Dock Company
| 20 February 1942
| 18 July 1942
| 30 October 1942
| Sunk by air raid at Yamada Bay
Yamada, Iwate
is a town located in Shimohei District, Iwate, Japan.As of 2003, the town has an estimated population of 20,413 and a population density of 77.49 persons per km². The total area is 263.44 km²....
on 10 August 1945. Decommissioned on 20 October 1945.
|-
| 480
| Aux. Minesweeper No.7
| Ōsaka Iron Works
| 10 February 1942
| 16 July 1942
| 28 December 1942
| Survived war at Singapore
Singapore
Singapore , officially the Republic of Singapore, is a Southeast Asian city-state off the southern tip of the Malay Peninsula, north of the equator. An island country made up of 63 islands, it is separated from Malaysia by the Straits of Johor to its north and from Indonesia's Riau Islands by the...
. Surrendered to United Kingdom in July 1946. Decommissioned in 1947.
|-
| 481
| Aux. Minesweeper No.8
| Ōsaka Iron Works
| 10 February 1942
| 16 July 1942
| 31 January 1943
| Sunk by air raid at Visayan Sea
Visayan Sea
The Visayan Sea is a sea in the Philippines, surrounded by the islands of the Visayas, Eastern Visayas and Western Visayas located to the east and west, while the Central Visayas is located to the south...
11°30′N 123°20′E on 21 October 1944. Decommissioned on 10 May 1945.
|-
| 482
| Aux. Minesweeper No.9
| Namura Shipbuilding
| 20 March 1942
| 15 August 1942
| 30 November 1942
| Survived war at Singapore
Singapore
Singapore , officially the Republic of Singapore, is a Southeast Asian city-state off the southern tip of the Malay Peninsula, north of the equator. An island country made up of 63 islands, it is separated from Malaysia by the Straits of Johor to its north and from Indonesia's Riau Islands by the...
. Surrendered to United Kingdom in July 1946. Decommissioned in 1947.
|-
| 483
| Aux. Minesweeper No.10
| Sanoyasu Dock Company
| 3 March 1942
| 19 August 1942
| 30 November 1942
| Sunk by USN destroyer off Vigan on 12 January 1945. Decommissioned on 10 May 1945.
|-
| 484
| Aux. Minesweeper No.11
| Naniwa Dock Company
| 6 April 1942
| 30 August 1942
| 24 February 1943
| Survived war. Decommissioned on 30 November 1945. Surrendered to United Kingdom on 14 November 1947.
|-
| 485
| Aux. Minesweeper No.12
| Naniwa Dock Company
| 7 September 1942
| 27 December 1942
| 31 March 1943
| Survived war. Decommissioned on 30 November 1945. Surrendered to Soviet Union on 3 October 1947.
|-
| 486
| Aux. Minesweeper No.13
| Hitachi Zōsen
| 21 July 1942
| 25 January 1943
| 14 April 1943
| Survived war. Decommissioned on 30 November 1945. Surrendered to United States on 1 October 1947. Sunk as target at 35°10′N 123°52′E on 12 February 1948.
|-
| 487
| Aux. Minesweeper No.14
| Hitachi Zōsen
| 21 July 1942
| 25 January 1943
| 14 May 1943
| Survived war. Decommissioned on 30 November 1945. Surrendered to Republic of China on 3 October 1947 and renamed Saolei 201. Escape to People's Liberation Army on 17 February 1949 and renamed Qiufeng. Decommissioned in 1976.
|-
| 488
| Aux. Minesweeper No.15
| Namura Shipbuilding
| 29 August 1942
| 25 January 1943
| 30 April 1943
| Survived war. Decommissioned on 30 November 1945.
|-
| 489
| Aux. Minesweeper No.16
| Sanoyasu Dock Company
| 24 August 1942
| 19 December 1942
| 31 March 1943
| Survived war. Decommissioned on 30 November 1945. Surrendered to United Kingdom on 14 November 1947.
|-
| 490
| Aux. Minesweeper No.17
| Naniwa Dock Company
| 7 September 1942
| 12 March 1943
| 28 May 1943
| Survived war. Decommissioned on 30 November 1945. Surrendered to Soviet Union on 3 October 1947.
|-
| 491
| Aux. Minesweeper No.18
| Namura Shipbuilding
| 15 February 1943
| 16 May 1943
| 31 July 1943
| Survived war. Decommissioned on 30 November 1945. Surrendered to United States on 3 October 1947. Sunk as target at 35°16′N 123°20′E on 21 January 1948.
|-
| 492
| Aux. Minesweeper No.19
| Sanoyasu Dock Company
| 25 December 1942
| 25 March 1943
| 30 June 1943
| Survived war. Decommissioned on 30 November 1945. Surrendered to Republic of China on 3 October 1947 and renamed Saolei 202. Renamed Jiangyong (YP-542) in 1952. Decommissioned in 1968. Scrapped.
|-
| 493
| Aux. Minesweeper No.20
| Naniwa Dock Company
| 5 February 1943
| 27 April 1943
| 31 July 1943
| Survived war. Decommissioned on 30 November 1945. Surrendered to Soviet Union on 3 October 1947.
|-
| 494
| Aux. Minesweeper No.21
| Hitachi Zōsen
| 16 October 1942
| 11 March 1943
| 15 June 1943
| Survived war. Decommissioned on 30 November 1945. Surrendered to United States on 1 October 1947. Sunk as target at 35°24′N 123°56′E on 30 October 1947.
|-
| 495
| Aux. Minesweeper No.22
| Namura Shipbuilding
| 20 May 1943
| 5 July 1943
| 20 October 1943
| Survived war. Decommissioned on 30 November 1945. Surrendered to Republic of China on 3 October 1947 and renamed Saolei 203. Renamed Jiangyi (YP-541) in 1952. Decommissioned in 1968. Scrapped.
|-