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Type of gun mount From Wikipedia, the free encyclopedia
The Panama Mount is a form of gun mount for fixed coastal artillery developed by the U.S. Army in Panama during the 1920s. Widely used during the buildup to and during World War II by the United States military, [1] it was typically equipped with a 155 mm (6.1 in) rifled gun.
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The term Panama mount is often incorrectly used to describe other gun mounts with similar layouts and/or purpose.
The Panama mount was constructed as needed to provide 180, 270, and 360 degrees of traverse, with its gun mounted on a central 10 ft (3.0 m) diameter concrete pier surrounded by a full or partial approximately 36 ft (11 m) concrete-embedded steel rail. Concrete beams connected the two for alignment and stability.
Originally the guns were traversed by pivoting their trailing arms around the steel ring with prybars. Later installations added a geared steel ring inside the rail.
The principle weapon employed was the Canon de 155mm GPF, the primary gun of the United States Army Coast Artillery Corps' tractor-drawn mobile units 1920-1945 (designated 155 mm gun M1917 (French-made) or M1918 (US-made) in U.S. service).
In World War II, Panama mounts were used to rearm six Harbor Defense Commands that had been disarmed in the 1920s; augment existing and new harbor defenses in the US and overseas; and for new defenses in Alaska, Newfoundland, Puerto Rico, and Australia.[2]
Many surviving examples of these mounts can be found throughout former US coast defense sites including California, Florida, Alaska, and Panama.
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