The 5-inch /54-caliber lightweight gun is a U.S. naval artillery gun mount consisting of a 5 in L54 Mark 19 gun on the Mark 45 mount. The later 62-calibre-long version consists of a longer-barrel L62
5-inch/62-caliber Mark 45 Mod 4, in flat-panel gun turret, test firing on USS Forrest Sherman
Mod 2
Mod 4
A Mod 2 gun aboard the Australian Anzac-class frigate HMAS Arunta
The Mark 42 5"/54 caliber gun is a naval gun mount used by the United States Navy and other countries. It consists of the Mark 18 gun and Mark 42 gun mount. United States naval gun terminology indicat
5-inch/54-caliber Mark 45 gun
…Defense, a company later acquired by BAE Systems Land & Armaments, which continued manufacture. Development started in the 1960s as a replacement for the 5-inch (127 mm)/54-caliber Mark 42 gun system that had debuted in 1953, with a new, lighter, and easier-to-maintain gun mounting. The United States Navy uses the Mark 45 with either the Mk…
5 inch/54 Mark 42 on USS Turner Joy
Two of the eight turrets of the carrier USS Ranger firing, in 1961.
Side profile of the 5-inch gun from HMAS Brisbane