NAVYPEDIA

Photo

Ibuki 1945 Many thanks to Wolfgang Stöhr for additional information on this page.

Ships

Name	No	Yard No	Builder	Laid down	Launched	Comp	Fate
伊吹 [Ibuki]		882	Kure K K // Sasebo K K	24.4.1942	21.5.1943	---	cancelled 3.1945, BU incomplete 1947

Technical data

Displacement standard, t	12500
Displacement full, t	14800
Length, m	187.8 pp 198.4 wl 205.0 oa
Breadth, m	21.2 wl 23.0 fd
Draught, m	6.31
No of shafts	2
Machinery	2 sets Kampon geared steam turbines, 4 Kampon  boilers
Power, h. p.	72000
Max speed, kts	29
Fuel, t	oil
Endurance, nm(kts)
Armour, mm	belt: 140 - 100, deck: 135 - 35
Armament	2 x 2 - 76/60 98-shiki, 16 x 3 - 25/60 96-shiki, 6 x 28 - 120 AA rockets, 2 DCR (30), 27 aircraft (A6M fighters, D3A, D4Y diving bombers, B5N, B6N, B7A torpedo bombers, C6N recon planes)
Electronic equipment	2x 1-shiki 2-go, 3-shiki 1-go radars
Complement	1015

Air group

Year	Fighters	torpedo bombers
planned	15 A6M5	16 B6N

Standard scale images

Graphics

Aircraft facilities

 (fd - 4,715m², ha ? m² / ? m³): Flight deck: 205.0x23.0m. There was hangar. There were 2 lifts (13.0x11.6m). Aircraft fuel stowage: 680t.    

Project history

Laid down as heavy cruiser, advanced variant of Mogami class. In the summer 1943 building was suspended. In November launched hull of the ship have started to rebuild to light aircraft carrier on Sasebo N Yd.

Under design carrier had typically Japanese architecture with island on starboard and one curved aft and downwards funnel. Half of boilers demounted for release of a place for additional fuel tanks and aviation petrol tanks, max speed was thus moderated by 4kts. Hangar had one level, that resulted the limited number of carried aircrafts. Ship was equipped with bulges (approximately in half of hull length). Protection is not precisely known; possibly, it remains as on cruiser: 100mm main belt (140mm abreast magazines), decks from 35 to 61mm. It is possible to consider as features of the project the big size of a flight deck (205х23m, longer than the hull) and absence of standard for remaining carriers 127mm or 100mm AA battery.

Ship protection

There was underwater protection (bulges). Internal main belt was inclined and had 100mm thickness abreast machinery and 140mm abreast magazines, it connected with anti-torpedo bulkhead by its lower edge. 61-35mm main deck was connected with its upper edge. Main deck thickness increased to 135mm over machinery.

Naval service

Building of Ibuki was cancelled in March, 1945, when her availability was approximately 80%. In 1947 ship was sold for scrap.