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The VPAM scale as of 2009 runs from 1 to 14, with 1-5 being soft armor, and 6-14 being hard armor. [1] Tested armor must withstand three hits, spaced 120 mm (4.7 inches) apart, of the designated test threat with no more than 25 mm (0.98 inches) of back-face deformation in order to pass.
Fort Rodd Hill featured three 6-inch disappearing guns. Between February 1894 and October 1897, two separate forts were constructed: one at Macaulay Point (site of earlier earthwork batteries), and an entirely new location at Rodd Hill, a bluff of rock overlooking the western side of the narrow entrance to Esquimalt harbour.
The 6-inch/47-caliber Mark 16 gun was used in the main batteries of several pre-war and World War II US Navy light cruisers. They were primarily mounted in triple turrets and used against surface targets. The Mark 16DP gun was a dual-purpose fitting of the Mark 16 for use against aircraft as well as surface ships.
When the United States entered the First World War it had a need for long-range heavy artillery, so guns produced for the US Army were given the designation 6-inch gun M1917. In some US sources the Mark XIX designation was also used. 100 weapons were acquired from the British by the US Army beginning in 1917, along with 50 "gun bodies ...
The Ordnance BL 6 inch 26cwt howitzer was a British howitzer used during World War I and World War II. The qualifier "26cwt" refers to the weight of the barrel and breech together which weighed 26 long hundredweight (1.3 t).
The 6-inch (152 mm)/50 caliber Mark 6 guns were developed around the time of the Spanish–American War. The gun card designates the gun as 46-caliber but the Bureau of Ordnance lists the guns as 50-caliber. [1] [2] The Mark 6 gun was constructed of gun steel using a tube, jacket, four hoops, a locking ring, and Welin breech block. It was ...