| Displacement | 215t standard |
|---|---|
| Length | 30.4m pp, 31.5m wl, 35.1m oa |
| Width | 6.2m |
| Draught | 2.4m |
| Machinery | 1-shaft diesel, 400bhp |
| Speed | 9.5kt |
| Armament | 1-8cm/40cal AA gun, 2-13.2mm AA, 40 mines (or 16 DCs) |
| Complement | 63 |
| Name | Plan | Builder | Laid down | Launch | Complete | ||
|---|---|---|---|---|---|---|---|
| Ma-1 | FY1940 | Uraga dock | 1941. 6. 4 | 1941. 8.20 | 1942. 2.28 | MLB | 1944. 2. 1 MLBa 1945. 3.27 sunk (mined, off Medan) 1947. 5. 3 disc |
| Ma-2 | FY1940 | Uraga dock | 1941. 6. 4 | 1941. 8.30 | 1942. 4.10 | MLB | 1942.12.31 sunk (mined, off Soerabaya) 1943. 3.20 disc |
| Ma-3 | FY1940 | Uraga dock | 1941. 9. 8 | 1942. 1.14 | 1942. 6.30 | MLB | 1944. 2. 1 MLBa 1947. 5. 3? disc |
| Ma-4 | FY1940 | Uraga dock | 1941. 9. 8 | 1942. 1.24 | 1942. 8.20 | MLB | 1944. 2. 1 MLBa 1944.11.20 sunk (torpedoed, off Car Nicobar I) 1947. 5. 3 disc |