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Wikipedia / Modified 5th Naval Armaments Supplement Programme

The , , was one of the wartime armaments expansion plans of the Imperial Japanese Navy (IJN).

Background

In September 1942, after being defeated in the Battle of Midway, the IJN drew up a new armaments expansion plan. This plan was combined by the 5th Naval Armaments Supplement Programme and the 6th Naval Armaments Supplement Programme to build the aircraft carriers rapidly. The main article was to build 20 aircraft carriers, and removed all battleships and heavy cruisers. Because of the need to protect convoys against Allied submarines some 72 destroyers were added to the programme and due to recent successes by Japanese submarines against Allied carriers some 96 large submarines were included.

They had approved 412 vessels, 1,150,000 tons. However, most of plans were not achieved. Until the end of the war only 60 vessels from this plan were completed.

Table of vessels

Category

Class

Vessel number(s)

Completed

Converted

Cancelled

Aircraft carrier

Unryū

#50015015

Amagi (#5001), Katsuragi (#5003)

#5002 and #5005 were converted to the Shinano

#50085015

G15 (Modified Taiho)

#50215025

#50215025

Seaplane tender

Akitsushima

#50315033

#50315033

Submarine tender

J27

#50345036

#50345036

Light cruiser

C44

#50375038

#50375038

Minelayer

H12C

#5039

#5039

Destroyer Type-A

Yūgumo

#50415048

#50415048

Destroyer Type-B

Akizuki

#50615083

#50615083

Cruiser submarine Type-A

I-13

#50915093

I-14 (#5091)

S48

#50945096

#50945096

Cruiser submarine Type-B

I-54

#51015114

#51015114

S49A

#51155132

#51155132

Cruiser submarine Type-C

I-52

#51415155

#51415155

S49B

#51565180

#51565180

Medium-sized submarine

Ro-35

#51815223

#51815223

Submarine Special type

I-400

#52315248

I-400 (#5231), I-401 (#5232), I-402 (#5233)

#52345248

Escort ship Type-B

Ukuru

#52515284

Yaku (#5251), Chikubu (#5253), Kōzu (#5255), Hodaka (#5256), Ikara (#5258), Ikuno (#5260)

#5252, 5254, 5257, 5259 and 52635266 were converted to the Hiburi class

#5261#5262, 52675284

Hiburi

Kume (#5252), Ikuna (#5254), Shisaka (#5257), Sakito (#5259), Mokuto (#5263), Habuto (#5264)

#52655266

Minesweeper

No.19

#5301–5336

#5301–5336

Subchaser

No.13

#5341–5370

No.60 (#5341), No.61 (#5342), No.63 (#5344)

#5343, 5345–5370

Fleet oiler

Kazahaya

#5381–5387

#5381–5387

J34

#5388–5395

#5388–5395

Food supply ship

Kinesaki

#5401–5407

#5401–5407

J20C

#5408

#5408

J35

#5409–5410

#5409–5410

Target ship

Ōhama

#5411–5415

Ōhama (#5411)

#5412–5415

Repair ship

Akashi

#5416–5417

#5416–5417

Survey ship

J11C

#5418

#5418

Icebreaker

J23

#5419

#5419

Minelayer

Ajiro

#5421–5432

#5421–5432

Submarine Type-D

I-361

#5461–5471

I-361 (#5461), I-362 (#5462), I-363 (#5463), I-364 (#5464), I-365 (#5465), I-366 (#5466), I-367 (#5467), I-368 (#5468), I-369 (#5469), I-370 (#5470), I-371 (#5471)

Destroyer Type-D

Matsu

#5481–5522

Matsu (#5481), Take (#5482), Ume (#5483), Momo (#5484), Kuwa (#5485), Kiri (#5486), Sugi (#5487), Maki (#5488), Momi (#5489), Kashi (#5490), Kaya (#5492), Nara (#5493), Sakura (#5496), Yanagi (#5497), Tsubaki (#5498), Kaki (#5499), Kaba (#5500), Hinoki (#5502), Kaede (#5505), Keyaki (#5508), Tachibana (#5511), Tsuta (#5514), Hagi (#5517), Sumire (#5520), Kusunoki (#5521), Hatsuzakura (#5522)

#5491, 5494–5495, 5501, 5503–5504, 5506–5507, 5509–5510, 5512–5513, 5515–5516, 5518–5519

See also

References