4th Naval Armaments Supplement Programme
The 4th Naval Armaments Supplement Programme (マル4計画, Maru 4 Keikaku) is one of the armaments expansion plan of the Imperial Japanese Navy (IJN).
Background
In 1939, the IJN started new naval armaments expansion plan. It extended to 80 warships and 75 Naval Air Groups by 1.6 billion JPY.
Table of vessels
| Category | Class | Vessel number(s) | Completed | Converted | Cancelled |
| Training cruiser | Katori | #101 | Kashii (#101) | ||
| Boom defence vessel | Hatsutaka | #102 | Wakataka (#102) | ||
| Fast combat support ship (Small) | Sunosaki | #103 | Sunosaki (#103) | ||
| Destroyer Type-B | Akizuki | #104 - 109 | Akizuki (#104), Teruzuki (#105), Suzutsuki (#106), Hatsuzuki (#107), Niizuki (#108), Wakatsuki (#109) | ||
| Battleship | Yamato | #110 - 111 | Shinano (#110, to aircraft carrier) | #111 | |
| Destroyer Type-A | Kagerō | #112 - 115 | Arashi (#112), Hagikaze (#113), Maikaze (#114), Akigumo (#115) | ||
| Destroyer Type-A | Yūgumo | #115 - 129 | Yūgumo (#116), Makigumo (#117), Kazagumo (#118), Naganami (#119), Makinami (#120), Takanami (#121), Ōnami (#122), Kiyonami (#123), Tamanami (#124), Suzunami (#126), Fujinami (#127) | Akigumo (#115, to Kagerō class) Shimakaze (#125, to Shimakaze class) #128 and #129 to Yamato class battleships |
|
| Aircraft carrier | Taihō | #130 | Taihō (#130) | ||
| Seaplane tender | Akitsushima | #131 | Akitsushima (#131) | ||
| Light cruiser Type-B | Agano | #132 - 135 | Agano (#132), Noshiro (#133), Yahagi (#134), Sakawa (#135) | ||
| Light cruiser Type-C | Ōyodo | #136 - 137 | Ōyodo (#136) | #137 | |
| Cruiser submarine Type-A | I-9 | #138 | I-11 (#138) | ||
| Cruiser submarine Type-B | I-15 | #139 - 153 | I-26 (#139) to I-39 (#152) | #153 to Yamato class battleships | |
| Large sized submarine | I-176 | #154 - 163 | I-176 (#154) to I-185 (#163) | ||
| Minesweeper | MSC-19 | #164 - 169 | MSC-19 (#164) to MSC-24 (#169) | ||
| Boom defence vessel | Sokuten | #170 - 179 | Hirashima (#170), Hōko (#171), Ishizaki (#172), Takashima (#173), Saishū (#174), Niizaki (#175), Yurijima (#176), Nuwajima (#177), Maeshima (#178) | #179 | |
| Subchaser | PC-13 | #180 - 183 | PC-13 (#180) to PC-16 (#183) | ||
| Cable layer | Hashima | [1] | Hashima, Turushima, Ōdate, Tateishi |
Notes
- ^ They do not have a vessel number(s), because they were demanded as support crafts (tugboats, cutters and other).
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)
- Rapidly Naval Armaments Supplement Programme (Maru Kyū Keikaku, 1941)
- 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)