於:昭和18年6月4日、広島湾を風上に向けて航行する陸軍のドック型強襲揚陸艦/対潜哨戒軽空母『あきつ丸』甲板にて実施。 Ka-2 gyroplane: Imperial Japanese Army development of the Ka-1, powered by a 245 hp (183 kW) Jacobs L-4MA-7 seven-cylinder, air-cooled, radial engine take-off and landing test on board Akitsu Maru (あきつ丸) was a Japanese landing craft depot ship and escort aircraft carrier operated by the Imperial Japanese Army (IJA).
Date : June 04 1943
Location : Hiroshima Bay (広島湾, Hiroshima-wan) is a bay in the Inland Sea, Japan.