d with a relief valve, which is au- type of battleship carries usually a main battery of four breech. When the plug is inserted, it is placed so that tomatically opened on the discharge of the gun. The heavy guns disposed in two turrets, fore and aft, supple- the remaining thread on both plug and… … projects above the roof of the tur- situated within the sighting station ret, and is heavily armored. It of the turret. The gun itself is mounted in a gun metal seating, to is provided with two narrow ver- tical and horizontal slots at which two sighting tele- whichit is strapped down by the four…
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