There were also two experimental Mark 2 guns, serial numbers 2 and 3, which had wider diameterīreech ends. Was also one caliber or some 7" (17.8 cm) longer than the Mark 1. Similar construction but was hooped all the way to the muzzle and had increasing rifling 0 to 1/25. Equipped with an experimental Welin breech block and uniform rifling 1/25. It had a screw-box liner and was hooped from breech to 47.5 inches (120.65 cm) from the Mark 1 was for serial number 1 gun and was constructed of liner, tube, jacket, three hoops and a In 1908 AP projectiles were fitted with a longer ballistic cap of 7crh which improved their Were mounted at Bora Bora, French Polynesia. Derussy at Pearl Harbor, Hawaii and as of 2006, four more Two of the coastal guns still exist at Ft. Still in their naval pedestal mountings, were used as railway guns during World War I.ĭuring World War II, some of the surviving guns were used in emergency coastal defense batteries. One of the tractor mountings still exists and has been ![]() 18 guns were delivered to the Marines and 20 to the Army prior to the Armistice, but none Marines ordered 20 of these guns and the Army orderedģ4 more. The tractor mountings were designed by BuOrd and built by the Baldwin Locomotive Many guns removed from old battleships were used as mobile land artillery (tractor mountings)ĭuring World War I. ![]() Was considered to be the largest possible given the technology of the time that was suitable for a ![]() Used as secondary guns on the last US pre-dreadnought classes.
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