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Sister ships Akagi Maru, Arima Maru, Asaka Maru and Awata Maru. Call sign JWUL. Laid down by Mitsubishi Jukogyo K.K., Nagasaki, Japan on 18 February 1937, launched on 7 July 1937, completed on 30 November 1937, requisitioned by the navy on 10 April 1940, registered as auxiliary armed merchant cruiser, stricken and returned to owners on 6 July 1940, requisitioned by the navy on 24 December 1940, partially converted into an auxiliary armed merchant cruiser between 26 December 1940-15 January 1941, visited Lisbon, Portugal 20-24 February 1941 and Bilbao, Spain between 25 February-13 March 1941 for loading ammunition and supplies from Germany and Switzerland, full conversion approved on 5 September executed between 8 September-16 October 1941, converted into a transport between 27 November-28 December 1943, sunk in an Americn air attack off the Pescadore Island on 12 October 1944 and stricken on 10 January 1945. Gross tonnage 7,399 tons, under deck 6,551 tons, netto tonnage 4,231 tons and as dimensions 462.7 x 62.3 x 34.4 x 15 (light)-19 (loaded) feet. Diesel propulsion, horsepower 2,248 np/8,000 bhp, oil bunker capacity 2,500 tons included deep tanks, range nautical 36,000 miles/15 knots, 16 knots/105 rpm, 19 knots/118 rpm and speed 15 (normal cruising)-19 (maximum) knots.