Originally to be built under the Eight-eight final plan dating 1920 as an oiler. Laid down by New York Shipbuilding on 14 September 1921, launched on 8 June 1922, completed and commissioned on 12 September 1922, converted into a seaplane tender including fitting out with a hangar in 1932, reclassified as a seaplane tender in February 1933, reclassified as a flying boat tender in 1939 and as an oiler on 15 April 1944, heavy damaged during an air attack on Hong Kong on 16 January 1945, again damaged in an air attack on 5 April 1945, afterwards sunk and decommissioned on 3 May 1947. Apparently broken up by British forces.
With a standard displacement of 17.273 (oiler)-15.628 on trials as flying boat tender) tons and as dimensions 148,89 (between perpendiculars) x 20,42 x 8,53 metres or 488.6 x 67.0 x 28.0 feet. Machinery consisted of 1 GE/Curtiss turbine, 2GE electric generators and 4 Babcock&Wilcox oil/coal-fired (as flying boat tender Kampon boilers) boilers supplying via 2 shafts 8.000shhp allowing a speed of 15 knots and a range of 8.000 nautical miles with a speed of 7 miles. Oil cargo capacity was 10.000 tons. Crew numbered 181 (as oiler0-324 (as seaplane tender) men. Armament as oiler 2-14cm/5.5” naval guns and 2-7,6cm/3” anti aircraft guns, as seaplane tender 2-7,6cm/3” anti aircraft guns and 22 Nakajima E4N or 12 Yokosuka E5Y aircraft and as flying boat tender 2-14cm/5.5” naval guns, 1-7,6cm/3” anti aircraft gun and 10-2cm/0.8” anti aircraft guns.
