Historic California Posts, Camp Stations and Airfields
Fort Miley: Battery 243
Example of the 6-inch rifle used at Battery 243
Battery Construction No. 243
by Justin M. Ruhge

The authorization for this two-gun 6-inch battery, Construction 243, at Fort Miley, was dated March 27, 1941. Construction did not begin until January 1943. The engineers' work was completed and accepted for use and care by the troops in February 1944. The battery was completed, including its carriages and shields except for the guns themselves. At the close of World War II, the guns had still not arrived but the battery was not abandoned. The Army wished to retain some 6-inch batteries to protect minefields. The two guns were mounted in April 1948, the last seacoast guns to be installed at San Francisco. The magazines for these guns were casemated. The guns themselves were on barbettes and protected by cast steel shields.
All that remains of them today are the concrete platforms, one of which has been converted to a flagstaff foundation. The casemated magazine was later used by the U.S. Navy who took over the task of protecting minefields in 1949.
Report of Completed Works - Seacoast Fortifications
Report of Completed Works - Seacoast Fortifications
BCN-200-Series Battery Layout
An Artist's Rendering of a Standard Two Gun 6-Inch Battery Showing Layout Details. Artwork by Gerald W. Butler.
Taken From of 1940 by Robert D. Zink,
The Six-Inch Part of the Modernization Program,
Coast Defense Study Group Journal, Vol. 8, No. 2, pgs. 21-39, May 1994.
Other Online or Printed Histories
Harbor Defenses of San Francisco - A Field Guide 1890 to 1950
The Six-Inch Part of the Modernization Program
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Updated 23 June 2017