14 in M1910 file photo (Battery Pennsylvania at Mokapu Peninsula, Oahu, Hawaii) [11481]

14 in M1910 Coastal Defense Gun

Country of OriginUnited States
TypeCoastal Defense Gun
Caliber360.000 mm
Length16,320.000 mm
Barrel Length16,000.000 mm
Weight309355.000 kg
Ammunition Weight753.00 kg
Rate of Fire2 rounds/min
Range20,850 m
Muzzle Velocity716 m/s


ww2dbaseIn 1910, a new 14-inch/45 caliber gun design was completed for the United States Navy to equip on New York-, Nevada-, and Pennsylvania-class battleships. Guns of this design also equipped British warships as the BL 14 inch gun Mk II; they were installed on Abercrombie-class monitors. In fall 1944, the 14-inch guns from turrets number 3 and 4 of the sunken USS Arizona were removed and given to the United States Army to be used as coastal defense guns. The US Army planned to install them in two locations in Hawaii, United States and planned to call them Battery Arizona and Battery Pennsylvania. Ultimately, only Battery Pennsylvania was completed. The 14-inch guns of Battery Pennsylvania went through a test firing exercise in late Aug 1945, and it was never used again. The battery was cut up for scrap after the war.

United States National Parks Service


Last Major Revision: Nov 2010

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