Lat 35° 20' 0" N Long 139° 40' 0" E.
Located on Natsu Island, connected by a causeway to Yokosuka on the mainland. The airfield is located next to the Yokosuka Naval Facility
south of Yokohama on Tokyo
Bay. Also known as "Yokosuka Field", "Yokosuka Airfield" or "Oppama".
Built by the Japanese prewar. Yokosuka Naval Base included Yokosuka Airfield and Yokosuka Seaplane Base.
The airfield complex was was rectangular in shape, covering about 126
acres and measuring 2200' N-S and 2680' E-W.A single asphalt runway 196' x 1475', approximately NE-SW, with grass outside the runway areas, plus the Yokosuka Seaplane Base. Of the 21 or more hangars, it
only seven are intended for
land plane use. There are many servicing and repair shops and underground
storage, probably of large capacity.
Site of Japanese Navy technical
air arsenal (Kaigun Koku-Gijutsu-Sho /Kugisho). Due to the shorter runway at Yokosuka, testing was later performed at Misawa Air Base, and Kisarazu Airfield on the other side of Tokyo Bay.
Japanese units based at Yokosuka
Yokosuka Kōkūtai (N1K2)
F6F-5 Hellcat Bureau Number 71441
Pilot August force landed January 4, 1945 taken to Yokosuka
American missions against Yokosuka
July 4 - 10, 1945
After the war, occupied by American forces. Used by the US Navy and Marines during the occupation
of Japan. During the American occupation, this airfield was known as NAS Oppama and remained
an active airfield until the 1950s.
Captured Japanese Aircraft
Captured at the airfield were three G4M3 Model 34 Betty bombers, including G4M3 Betty Tail T2-2205, A6M7 Zero 23186, N1K2 George 5341. Captured Japanese aircraft from other locations were assembled at Yokosuka for shipment to the United States aboard USS Barnes (CVE-20) which departed on November 3, 1945 for the United States.
Survey of Japanese Airfields in the Empire Area. CinCPac-CinCPOA Sept. 1944
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January 9, 2018