Panama mount
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.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.Originally the guns were traversed by pivoting their trailing arms around the steel ring with prybars.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).[2] Many surviving examples of these mounts can be found throughout former US coast defense sites including California, Florida, Alaska, and Panama.
155 mm gun M1918coastal artilleryU.S. ArmyPanamaWorld War IIrifled gunCanon de 155mm GPFUnited States Army Coast Artillery CorpsHarbor Defense CommandsNewfoundlandPuerto RicoCaliforniaFloridaAlaskaFort MilesCape Henlopen State ParkPeron BatteryBarbetteDisappearing carriageSeacoast defense in the United StatesList of U.S. Army weapons by supply catalog designation