The 5-inch (127 mm)/54-caliber (Mk 45) lightweight gun is a U.S. naval artillery gun mount consisting of a 5 in (127 mm) L54 Mark 19 gun on the Mark 45 mount. [1] It was designed and built by United Defense, a company later acquired by BAE Systems Land & Armaments, which continued manufacture.

The Mark 12 5"/38-caliber gun was a United States dual-purpose naval gun, but also installed in single-purpose mounts on a handful of ships. The 38-caliber barrel was a mid-length compromise between the previous United States standard 5"/51 low-angle gun and 5"/25 anti-aircraft gun.

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2021年9月20日 · Fully-automatic naval gun mount employed against surface (Anti-Surface Warfare - ASuW), air (Anti-Air Warfare - AAW) and land attack (Naval Surface Fire Support - NSFS) targets. The MK 45 gun...

The Mark 42 5"/54 caliber gun (127mm) is a naval gun (naval artillery) mount used by the United States Navy and other countries. It consists of the Mark 18 gun and Mark 42 gun mount.

Fully-automatic naval gun mount employed against surface (Anti-Surface Warfare - ASuW), air (Anti-Air Warfare - AAW), and land attack (Naval Surface Fire Support - NSFS) targets.

The 5-inch (127-mm) 62-caliber Mk 45 Mod 4 Naval Gun system is in U.S. Navy service today, and is ready to significantly enhance Naval Surface Fire Support (NSFS) and overall mission performance.

5"/62 (12.7 cm) Mark 45 Mod 4 on USS Winston Churchill DDG-81. This latest version of the Mark 45 gun mount was designed to be used with the Extended Range Guided Munition (Mark 171 ERGM) in order to provide over-the-horizon range and improved lethality.

Designed to fulfill the needs of battleships as well as destroyers, the 5-inch/38-caliber dual-purpose gun became one of World War II’s best regarded and most versatile naval weapons. It was the conflict’s iconic U.S. destroyer gun as well as the Navy’s workhorse on board capital ships, cruisers, and auxiliaries.

Fully automatic, this lightweight gun system offers significant improvements in reliability and maintainability over the previous 5"/54 (12.7 cm) Mark 42 gun systems. The mount is unmanned above deck and all mechanisms have been greatly simplified.