It was built by Mitsubishi to a design by Blackburn Aircraft of Britain and was operated by the Imperial Japanese Navy.

[1] The T.7B was a three-seat biplane of steel tube construction and with high aspect ratio wings fitted with Handley Page slats, powered by a 466 kW (625 hp) Hispano-Suiza 12Lbr engine.

This first flew on 28 December 1929 at Blackburn's factory at Brough, Yorkshire[1] and was shipped to Japan in February 1930.

[3] The B2M1 entered service with the Imperial Japanese Navy in March 1932,[3] serving aboard the carriers Akagi, Kaga, and Hōshō.

[3][4] Data from World Encyclopedia of Military Aircraft[2]General characteristics Performance Armament