page_title: Japanese aircraft carrier Chūyō
section_title: Civilian service
hierarchical_section_title: Japanese aircraft carrier Chūyō / Civilian service
caption_attribution_description: English: Nitta Maru underway pre-ww2 as a passenger liner.
context_page_description: Chūyō was a Taiyō-class escort carrier originally built as Nitta Maru, the first of her class of three passenger-cargo liners built in Japan during the late 1930s. She was requisitioned by the Imperial Japanese Navy in late 1941 and was converted into an escort carrier in 1942. She spent most of her service ferrying aircraft, cargo and passengers to Truk until she was torpedoed and sunk by an American submarine in late 1943 with heavy loss of life.
context_section_description: Nitta Maru was the lead ship of her class and was built by Mitsubishi Shipbuilding & Engineering Co. at their Nagasaki shipyard for Nippon Yusen Kaisha (NYK). She was laid down on 9 May 1938 as yard number 750, launched on 20 May 1939 and completed on 23 March 1940. The IJN subsidized all three Nitta Maru-class ships for possible conversion into auxiliary aircraft carriers. The ships were intended to upgrade NYK's passenger service to Europe and it was reported that Nitta Maru was the first ship to be fully air conditioned in the passenger quarters. The ships had accommodation for 285 passengers (127 first class, 88 second and 70 third). The start of World War II in September 1939 restricted them to the Pacific and they served on the San Francisco run until the Japanese Government declared a ban on all voyages to the United States in August 1941.
  The 17,163-gross register ton (GRT) vessel had a length of 170.0 meters (557.8 ft), a beam of 22.5 meters (73.8 ft) and a depth of hold of 12.4 meters (40.7 ft). She had a net tonnage of 9,397 and a cargo capacity of 11,800 tons. The ship was powered by two sets of geared steam turbines made by the shipbuilder, each driving one propeller shaft, using steam produced by four water-tube boilers. The turbines were rated at a total of 25,200 shaft horsepower (18,800 kW) that gave her an average speed of 19 knots (35 km/h; 22 mph) and a maximum speed of 22.2 knots (41.1 km/h; 25.5 mph).
caption: Nitta Maru underway pre-ww2 as a passenger liner
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