The Rapid Naval Armaments Supplement Programme (マル急計画, 出師準備第一着作業建艦計画, Maru Kyū Keikaku, Suishi-Junbi Dai-Ichi Chakusagyō Kenkan Keikaku) was one of the armaments expansion plan of the Imperial Japanese Navy (IJN).
Background
In August 1941, the IJN started building warships for war. It extended to 293 vessels, 300,000 tons.
Table of vessels
| Category | Class | Vessel number(s) | Completed | Converted | Cancelled |
| Heavy cruiser | Ibuki | #300 - 301 | #300 was converted to aircraft carrier | #301 | |
| Aircraft carrier | Unryū | #302 | Unryū (#302) | ||
| Seaplane tender | Akitsushima | #303 | #303 | ||
| Fleet oiler | Kazahaya | #304 - 307 | Kazahaya (#304) | #306 was converted to the Hayasui class | #305, 307 |
| Hayasui | Hayasui (#306) | ||||
| Escort ship Type-A | Etorofu | #310 - 339 | Etorofu (#310), Matsuwa (#311), Sado (#312), Oki (#313), Mutsure (#314), Iki (#315), Tsushima (#316), Wakamiya (#317), Hirado (#318), Fukae (#319), Amakusa (#321), Manju (#323), Kanju (#325), Kasado (#330) | #320, #322, #324, #326 - 329 and #331 - 339 were converted to the Mikura class | |
| Escort ship Type-B | Mikura | Mikura (#320), Miyake (#322), Awaji (#324), Nōmi (#326), Kurahashi (#327), Chiburi (#329), Yashiro (#331), Kusagaki (#334) | #328, #333 and #339 were converted to the Hiburi class #332 and #335 - 338 were converted to the Ukuru class |
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| Hiburi | Hiburi (#328), Daitō (#333), Shōnan (#339) | ||||
| Ukuru | Ukuru (#332), Okinawa (#335), Amami (#336), Aguni (#337), Shinnan (#338) | ||||
| Destroyer Type-A | Yūgumo | #340 - 355 | Hayanami (#340), Hamanami (#341), Okinami (#342), Kishinami (#343), Asashimo (#344), Hayashimo (#345), Akishimo (#346), Kiyoshimo (#347) | #348 - 355 | |
| Destroyer Type-B | Akizuki | #360 - 369 | Shimotsuki (#360), Fuyutsuki (#361), Harutsuki (#362), Yoizuki (#363), Natsuzuki (#364), Hanazuki (#366) | #367 - 369 | |
| Cruiser submarine Type-B | I-40 | #370 - 375 | I-40 (#370) to I-45 (#375) | ||
| Cruiser submarine Type-C | I-16 | #376 - 378 | I-46 (#376) to I-48 (#378) | ||
| S49B | #379 - 381 | #379 - 381 | |||
| Medium-sized submarine | Ro-35 | #385 - 396 | Ro-44 (#385) to Ro-50 (#391), Ro-55 (#396) | #392 - 395 | |
| Ro-100 | #400 - 408 | Ro-109 (#400) to Ro-117 (#408), | |||
| Minesweeper | No.19 | #410 - 437 | No.25 (#410) to No.30 (#415), No.33 (#418), No.34 (#419), No.38 (#423), No.39 (#424), No.41 (#426) | #416 - 417, #420 - 422, #425, #427 - 437 | |
| Subchaser | No.13 | #440 - 459 | No.40 (#440) to No.58 (#458) | #459 | |
| Minelayer | Ajiro | #460 - 473 | Ajiro (#460) | #461 - 473 | |
| Auxiliary minesweeper | Aux. No.1 | #480 - 495 | Aux. No.7 (#480) to Aux. No.22 (#495) | ||
| Auxiliary subchaser | Aux. No.1 | #500 - 599 | Aux. No.1 (#500) to Aux. No.100 (#599) | ||
| Patrol torpedo boat | No.10 | #600 | No.10 (#600) | ||
| No.11 | #601 - 617 | No.11 (#601) to No.16 (#606) | #607 - 617 |
See also
- 1st Naval Armaments Supplement Programme (Maru 1 Keikaku, 1931)
- 2nd Naval Armaments Supplement Programme (Maru 2 Keikaku, 1934)
- 3rd Naval Armaments Supplement Programme (Maru 3 Keikaku, 1937)
- 4th Naval Armaments Supplement Programme (Maru 4 Keikaku, 1939)
- Temporal Naval Armaments Supplement Programme (Maru Rin Keikaku, 1940)
- Additional Naval Armaments Supplement Programme (Maru Tui Keikaku, 1941)
- 5th Naval Armaments Supplement Programme (Maru 5 Keikaku, 1941)
- 6th Naval Armaments Supplement Programme (Maru 6 Keikaku, 1942)
- Modified 5th Naval Armaments Supplement Programme (Kai-Maru 5 Keikaku, 1942)
- Wartime Naval Armaments Supplement Programme (Maru Sen Keikaku, 1944)
References
- Rekishi Gunzō series, Gakken (Japan)
- The Maru Special series, Ushio Shobō
- Daiji Katagiri, Ship Name Chronicles of the Imperial Japanese Navy Combined Fleet, Kōjinsha (Japan), June 1988, ISBN 4-7698-0386-9
- 大日本帝国海軍艦艇一覧 (ja)
| IJN Naval Armament Supplement Programs | |
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