Location
Located on the west shore of Tokyo Bay, aproximately approximately 28 miles south-southwest of the Imperial Palace in Tokyo and two miles north of the Yokosuka naval dockyards.

Wartime History
Yokosuka Naval Base was an important Navy Yard, Yokosuka Arsenal and Yokosuka Naval Air Factory. During 1944-1945, Yokosuka was one of the key stations for the defense of the Tokyo area. On August 30, 1945 US Marines landed at Yokosuka Naval Base, along with the US Army 11th Airborne Division that landed at Atsugi Airfield beginning the American occupation of Japan.

American missions against Yokosuka
July 4 - 10, 1945

July 4, 1945
(20th AF) P-51D Mustangs from Iwo Jima attack Yokosuka Naval Base.

July 10, 1945
(USN) Carrier aircraft attack naval shipping at Yokosuka

Yokosuka Airfield & Seaplane Base (NAS Oppama)
Japanese airfield and seaplane base occupied by the US Navy and Marines

Yokosuka Arsenal
Naval arsenal that produced weapons and equipment for the Japanese Navy.

Yokosuka Naval Air Factory
An aeronautical research center is immediately south and southwest of the seaplane base. The factory has about 50 buildings. The Naval Air Station, which adjoins the Tokyo Bay defense system, is subject ot frequent fogs, especially in winter. A second air field has been reported in this vicinity, but its exact location is not known.

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Last Updated
March 16, 2013