
Naval Historical Center #42271
| Tonnage | 10,600 tons standard displacement |
| Dimensions | 590'7" by 68'2" by 23'3" 180.00m by 20.78m by 7.09m |
| Maximum speed | 29 knots |
| Complement | 924 |
| Aircraft | 513'6" (156.5m) flight deck 2 elevators 48 aircraft |
| Armament | 4x2 5"/40
dual-purpose guns 2x2 25mm AA guns 24 13mm AA guns |
| Machinery |
2-shaft geared turbines (65,000
shp) 6 Kampon boilers |
| Bunkerage | 2490 tons fuel oil 43,000 gallons (163,000 liters) aviation gasoline |
| Range | 10,000 nautical miles (19,000 km) at 14 knots |
| Modifications |
1942: Added 6x3 25mm AA guns |
The Ryujo was
completed in 1933 as Japan’s
first carrier built as such from the keel up. Her designers did
everything possible to keep her displacement under 10,000 tons so that
she would be excluded from the total carrier tonnage limit under the naval disarmament
treaties. However, it soon became clear that original design would
be unable to embark an effective air group, and the design was modified
by adding a second hangar deck to increase her air group to 48
aircraft. This pushed her displacement to almost 12,500 tons, but this
fact was concealed from the other treaty powers.
The result was a carrier that was able to
operate a fairly
large air group for her size, but lacked strength,
protection, and stability. A flush deck carrier, her flight deck ended
almost 80' (24m) short of her bow, which gave her bridge excellent
visibility at the cost of further reducing her flight deck length. She
was in
some respects an attempt to build the minimum possible useful carrier.
She was extensively modified after the Tomozuru
incident to improve her stability, which also reduced her displacement
to near the treaty limit, but at the cost of a reduced antiaircraft
battery.
Ryujo
began the war with the Legaspi
Support Force
(Takagi)
off Davao. She
was sunk by aircraft on 24 August 1942 off Guadalcanal, during the Battle of the Eastern Solomons.
References
CombinedFleet.com
(accessed 2007-12-20)
Jentschura,
Jung, and Mickel (1977)
Peattie (2001)
The Pacific War Online Encyclopedia © 2007, 2009 by Kent G. Budge. Index