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Rapid Naval Armaments Supplement Programme

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), Hirato (#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
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

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)

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