Type C submarine
The Cruiser submarine Type-C was one of the first classes of submarine in the Imperial Japanese Navy to serve during the Second World War. Type-C submarines were better armed than the Type-A and Type-B. The Type-Cs were also utilized as Kō-hyōteki or Kaiten mother ships, for this reason they were not equipped with aviation facilities.
Class variants
The Type-C submarines were divided into three classes:- Type-C
- Type-C Mod.
- Type V22B. However, the Vessel number 379-class was never built.
''Type-C'' (''I-16'' class)
- Boats in class
| Boat No. | Boat | Builder | Laid down | Launched | Completed | Results | Fate |
| 44 | Mitsubishi, Kōbe Shipyard Kure Naval Arsenal | 15-09-1937 | 28-07-1938 | 20-03-1940 | Sank Yugoslav merchant ship Susak on 06-06-1942. Sank Greek merchant vessel Aghios Georgios IV on 07-06-1942. Sank Yugoslav merchant ship Supetar on 12-06-1942. Sank Swedish merchantman Eknaren on 01-07-1942. | Sunk by northeast of Buin at on 19-05-1944. | |
| 45 | Sasebo Naval Arsenal | 25-08-1937 | 12-11-1938 | 31-01-1941 | Sank Norwegian merchant ship Wilford on 08-06-1942. Sank Dutch merchant vessel De Weert on 01-07-1942. Sank RMS Mundra on 08-07-1942. | Sunk by southeast of Guadalcanal at on 11-02-1943. | |
| 46 | Mitsubishi, Kōbe Shipyard | 16-11-1937 | 25-01-1939 | 26-09-1940 | Damaged on 09-05-1942 by Kō-hyōteki. Damaged RMS British Loyalty on 09-05-1942 by Kō-hyōteki. Sank Panamanian merchant ship Johnstown on 05-06-1942. Sank Greek merchant vessel Christos Markettos on 08-06-1942. Sank RMS Mahronda 11-06-1942. Sank Panamanian merchantman Hellenic Trader on 12-06-1942. Sank RMS Clifton Hall on 12-06-1942. Sank Norwegian merchant ship Goviken on 30-06-1942. Sank RMS Steaua Romana on 30-06-1942. Damaged unknown merchant ship on 03-12-1942 by Kō-hyōteki. | . Sunk by at New Hebrides on 03-09-1943. . Sunk by at Vella Lavella on 01-10-1943. | |
| 47 | Kawasaki, Kōbe Shipyard | 25-11-1937 | 23-12-1938 | 10-03-1941 | Sunk by a PBY-5A Catalina flying boat near Malaita in the Solomon Islands at on 6-10-1942. | ||
| 48 | Sasebo Naval Arsenal | 05-12-1938 | 12-11-1939 | 31-10-1941 | Sank HMAS Kuttabul on 31-05-1942 by Kō-hyōteki. Sank Australian merchant ship Iron Chieftain on 03-06-1942. Damaged RMS Orestes on 09-06-1942. Damaged on 07-12-1942 by Kō-hyōteki. | Rammed and sunk by USS PC-487 at Kiska on 11-06-1943. | |
| 376 | Sasebo Naval Arsenal | 21-11-1942 | 03-06-1943 | 29-02-1944 | Probably lost in an accident or sunk by enemy attack east of Leyte Gulf, after 26-10-1944. | ||
| 377 | Sasebo Naval Arsenal | 21-11-1942 | 29-09-1943 | 10-07-1944 | Sank on 20-11-1944 by Kaiten. | Converted to a Kaiten mother ship, at the end of 1944, decommissioned on 30-11-1945, sunk as a target off the Gotō Islands on 01-04-1946. | |
| 378 | Sasebo Naval Arsenal | 19-06-1943 | 12-12-1943 | 05-09-1944 | Converted to a Kaiten mother ship, end of 1944, sunk by and at Ulithi on 23-01-1945. |
''Type-C Mod.'' (''I-52'' class)
Project number S37D. Twenty boats were planned under the Maru Tsui Programme and the Kai-Maru 5 Programme. According to their Project number, they were one of the variants of the Type-B submarine. Seventeen boats were cancelled in late 1943, because the IJN was planning to build the which was to become the primary submarine in 1945.- Boats in class
| Boat No. | Boat | Builder | Laid down | Launched | Completed | Results | Fate' |
| 625 | Kure Naval Arsenal | 18-03-1942 | 10-11-1942 | 28-12-1943 | Sunk by aircraft from west of Cap-Vert at on 24-06-1944. | ||
| 626 | Kure Naval Arsenal | 15-05-1942 | 24-12-1942 | 20-02-1944 | Damaged 21-07-1945 by Kaiten. Sank on 24-07-1945 by Kaiten. Damaged on 04-08-1945 by Kaiten. | Converted to a Kaiten mother ship in July 1944. Decommissioned on 30-11-1945, sunk as a target off the Gotō Islands on 01-04-1946. | |
| 628 | Kure Naval Arsenal | 15-06-1942 | 20-04-1943 | 20-04-1944 | Sunk by, and aircraft from east of the Mariana Islands on 28-07-1944. | ||
| 630 632 | I-57 I-59 | Cancelled in 1943. | |||||
| 5141 - 5155 | Cancelled in 1943. |
''Type V22B''
Project number S49B. Twenty eight boats were planned under the Maru Kyū Programme and the Kai-Maru 5 Programme. All boats were cancelled in late 1943, because the IJN was planning to build the .- Boats in class
| Boat No. | Boat | Builder | Laid down | Launched | Completed | Fate' |
| 379 - 381 | Cancelled in 1943. | |||||
| 5156 - 5180 | Cancelled in 1943. |