# 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.

## Background

* Project number I4B. Improved model of the No.7-class. The IJN gave them a turret of 55 degrees gun elevation, 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 | 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 / ﻿34.267°N 123.617°E﻿ / 34.267; 123.617 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 / ﻿35.317°N 123.517°E﻿ / 35.317; 123.517 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 / ﻿39.333°N 142.117°E﻿ / 39.333; 142.117 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 / ﻿1.417°N 123.483°E﻿ / 1.417; 123.483 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 / ﻿6.300°S 116.233°E﻿ / -6.300; 116.233 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 / ﻿21.350°N 119.750°E﻿ / 21.350; 119.750 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 / ﻿35.017°N 125.700°E﻿ / 35.017; 125.700 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

## Footnotes

* ↑ 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).
* ↑ Minesweeper No.19 (第十九号掃海艇, Dai 19 Gō Sōkaitei). The same shall apply hereinafter.