|Yamashio Maru-class escort carrier|
|Builders:||Mitsubishi Heavy Industries|
|Operators:||Imperial Japanese Army|
|Preceded by:||Akitsu Maru|
|Succeeded by:||Kumano Maru|
|Displacement:||16,119 tonnes (15,864 long tons)|
|Length:||157.5 m (516 ft 9 in)|
|Beam:||20.48 m (67 ft 2 in)|
|Draught:||9 m (29 ft 6 in)|
4,500 shp (3,400 kW)|
Geared steam turbine
|Speed:||15 knots (28 km/h; 17 mph)|
|Range:||9,000 nmi (17,000 km; 10,000 mi) @ 13 knots (24 km/h; 15 mph)|
16 × 25 mm (1 in) AA guns|
120 Depth charges
The Yamashio Maru-class (Japanese language: 山汐丸 ) consisted of a pair of auxiliary escort carriers operated by the Imperial Japanese Army during World War II. They were converted from tankers. Only the name ship was completed during the war and she was sunk by American aircraft before she could be used.
In 1944, the Japanese Army, which had already converted two passenger liners into combined assault ship and aircraft carriers, when it decided to acquire its own escort carriers to provide air cover for troop convoys. It therefore chartered two partly built Type 2TL Tankers, Yamashio Maru and Chigusa Maru, for conversion to auxiliary escort carriers.
The conversion was extremely simple, with a 107-metre (351 ft 1 in)-long flush flight deck added. There was no hangar, the ship's eight Ki-76s being stored on deck. Defensive armament consisted of sixteen 25 mm anti-aircraft guns, with a depth charge projector forward.
Yamashio Maru commissioned on 27 January 1945, was sunk at Yokohama harbor by US aircraft on 17 February 1945. Plans were drawn up for conversion to a coal-burning freighter, but she was never used as a carrier. Her sister ships, Chigusa Maru and Zuiun Maru, were incomplete when Japan surrendered and served after the war as tankers.
- Gardiner and Chesneau, p. 213
- Chesneau, p. 186
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