Seversky A8V
The A8V1 Type S Two Seat Fighter was an aircraft developed in the United States in the 1930s by Seversky Aircraft, purchased and operated in small numbers by the Imperial Japanese Navy Air Service. == Design and development == The origins of the A8V trace back to the SEV-3, an amphibious aircraft that was the company's first design and which was developed into the BT-8 basic trainer for the United States Army Air Corps (USAAC).