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.

United States naval gun terminology indicates the gun fired a projectile 5 inches (127 mm) in diameter, and the barrel was 38 calibers long. The increased barrel length provided greatly improved performance in both anti-aircraft and anti-surface roles compared to the 5"/25 gun.

A 5-inch gun is a gun with a 5-inch bore. Examples include these naval weapons: BL 5 inch gun Mk I – V British naval and coast defence guns of 1880s-1890s; 5-inch gun M1897 and M1900 - US Army coast artillery weapons 1900-1920; 5"/25 caliber US anti-aircraft gun; 5"/40 caliber gun - USN gun; 5"/50 caliber gun - USN gun; 5"/51 caliber US anti ...

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.

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...

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.

The Mk 45 Mod 4 provides NSFS range of more than 20 nautical miles (36 km) with the Navy's new 5-inch Cargo projectile and an improved propelling charge. Operation and performance of extended-range munitions are tailored for optimal effect and range in unison with the major subsystem upgrades of the Mk 45 Mod 4 Naval 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 consisted of the Mark 18 gun and Mark 42 gun mount. United States naval gun terminology indicates the gun fires a projectile 5 inches (127.0 mm) in diameter, and the barrel is 54 calibers long (barrel length is 5 ...

Versatile and extremely accurate, the gun is also used in an anti-air defense in depth capacity. The 54-caliber (Mk 45) lightweight gun provides surface combatants accurate naval gunfire...

The 5-Inch/54-caliber (Mk 45) lightweight gun is a modern U.S. naval artillery gun mount consisting of a 5-inch (127 mm) L54 Mark 19 gun on the Mark 45 mount. [1] Originally designed and built by United Defense, it is now manufactured by BAE Systems Land & Armaments after the former was acquired.