1-go 1941
| Name | No | Yard No | Builder | Laid down | Launched | Comp | Fate |
| 第1号掃海特務艇 [1-go] | Mitsubishi, Shimonoseki | 9.11.1941 | 1.1942 | sunk 4.5.1942 | |||
| 第2号掃海特務艇 [2-go] | Mitsubishi, Shimonoseki | 9.11.1941 | 2.1942 | sunk 4.5.1942 | |||
| 第3号掃海特務艇 [3-go] | Mitsubishi, Shimonoseki | 31.3.1942 | 5.1942 | sunk 24.7.1945 | |||
| 第4号掃海特務艇 [4-go] | Naniwa, Osaka | 10.3.1942 | 6.1942 | sunk 19.7.1944 | |||
| 第5号掃海特務艇 [5-go] | Mitsubishi, Shimonoseki | 31.3.1942 | 6.1942 | damaged 18.9.1944, never repaired | |||
| 第6号掃海特務艇 [6-go] | Naniwa, Osaka | 18.7.1942 | 10.1942 | damaged 10.8.1945, repaired mercantile 1946 | |||
| 第7号掃海特務艇 [7-go] | Mitsubishi, Shimonoseki | 16.7.1942 | 12.1942 | surrendered 8.1945, operated mercantile | |||
| 第8号掃海特務艇 [8-go] | Mitsubishi, Shimonoseki | 16.7.1942 | 1.1943 | sunk 21.10.1944 | |||
| 第9号掃海特務艇 [9-go] | Namura, Osaka | 25.1.1943 | 4.1943 | surrendered 8.1945, operated mercantile | |||
| 第10号掃海特務艇 [10-go] | Sanoyago, Osaka | 25.1.1943 | 5.1943 | sunk 11.1.1945 | |||
| 第11号掃海特務艇 [11-go] | Naniwa, Osaka | 1942 | 2.1943 | surrendered 8.1945, to United Kingdom 11.1947, BU | |||
| 第12号掃海特務艇 [12-go] | Naniwa, Osaka | 1942 | 8.1943 | surrendered 8.1945, to Soviet Union 10.1947 | |||
| 第13号掃海特務艇 [13-go] | Hitachi, Sakurajima | 25.1.1943 | 4.1943 | surrendered 8.1945, to USA 10.1947, BU | |||
| 第14号掃海特務艇 [14-go] | Hitachi, Sakurajima | 25.1.1943 | 5.1943 | surrendered 8.1945, to China 10.1947 (扫雷 201 [Sao Lei 201]) | |||
| 第15号掃海特務艇 [15-go] | Namura, Osaka | 1943 | 4.1943 | surrendered 8.1945, BU 1946 | |||
| 第16号掃海特務艇 [16-go] | Sanoyago, Osaka | 1943 | 3.1943 | surrendered 8.1945, to United Kingdom 11.1947, BU | |||
| 第17号掃海特務艇 [17-go] | Naniwa, Osaka | 1943 | 5.1943 | surrendered 8.1945, to Soviet Union 10.1947 | |||
| 第18号掃海特務艇 [18-go] | Namura, Osaka | 1943 | 7.1943 | surrendered 8.1945, to USA 10.1947, BU | |||
| 第19号掃海特務艇 [19-go] | Sanoyago, Osaka | 1943 | 6.1943 | surrendered 8.1945, to China 10.1947 (扫雷 202 [Sao Lei 202]) | |||
| 第20号掃海特務艇 [20-go] | Naniwa, Osaka | 1943 | 7.1943 | surrendered 8.1945, to Soviet Union 10.1947 | |||
| 第21号掃海特務艇 [21-go] | Hitachi, Sakurajima | 11.3.1943 | 6.1943 | surrendered 8.1945, to USA 10.1947, BU | |||
| 第22号掃海特務艇 [22-go] | Namura, Osaka | 1943 | 10.1943 | surrendered 8.1945, to China 10.1947 (扫雷 203 [Sao Lei 203]) |
|
Displacement standard, t |
215 |
|
Displacement normal, t |
222 |
|
Length, m |
33.0 |
|
Breadth, m |
5.92 |
|
Draught, m |
2.29 |
|
No of shafts |
1 |
|
Machinery |
1 diesel |
|
Power, h. p. |
300 |
|
Max speed, kts |
9.5 |
|
Fuel, t |
diesel oil |
| Endurance, nm(kts) | 1700(9.5) |
|
Armament |
1 x 1 - 76/23 41-shiki, 1 x 1 - 7.7/80, mechanical, magnetic minesweeping gear, 1 DCR (6) |
| Electronic equipment | K-gata hydrophone |
|
Complement |
43 |
Project history: Design was developed on the basis of trawler. Ships were built under 1940 (first 6) and 1941 (remaining) programmes. Orders were placed on small yards which had experience of wood fishing vessels building.
Modernizations: 1944, most survived: - 1 x 1 - 7.7/80; + (2 - 4) x 1 - 25/60 96-shiki, DC stowage was increased to 15.
Naval service: 6 ships were lost during war: Wa1 and Wa2 (sunk by US carrier aircraft 4.5.1942 at Solomons), Wa4 (sunk 19.7.1944 by British aircraft at Timor), Wa8 (sunk 21.10.1944 by US carrier aircraft off Panay), Wa10 (sunk 11.1.1945 by US destroyers S off Luzon) and Wa3 ( sunk 24.7.1945 by US aircraft in Surabaya harbour).
Wa5 was damaged 18.9.1944 by US aircraft at Carolines and never repaired. Wa6 was badly damaged 10.8.1945 by US aircraft, ran aground in Yamada Bay, later she was raised and repaired for mercantile service.
2-go 1942
© Ivan Gogin, 2008-14