


Guidance System: MK 45 Gun Mount is remotely fired from the MK 160 Gun Computer System or MK 86 Gun Fire Control System during normal operations Magazine Capacity: 600 rounds conventional for Destroyers 1200 rounds conventional for Cruisers.Ĭaliber: 5 inch 54 caliber (MK 54 Mod 1/2) barrel length of 270 inches (54 x 5) Type Fire: 16-20 rounds per minute automatic, conventional ammunition. Range: 13 nautical miles (14.9 statute miles) with conventional ammunition. General Characteristics Primary Function: Fully-automatic, naval gun mount.

The MK 45 gun is installed aboard DDG 51 and CG 47 class ships. Additional rounds can be loaded and fired by the full crew (Mount Captain, EP-2 Operator and four ammunition handlers), all of which are stationed below deck. The rounds in the loader drum can be fired with one crewmember located at the EP-2 console below deck. The gun's maximum firing rate is 16-20 rounds from the loader drum per minute. The gun mount includes a 20 round automatic loader drum. The MK 45 MOD 4 gun mount upgrade includes a longer barrel (62 caliber) that improves the gun's effectiveness as a land attack weapon (naval surface fire support). It is designed to engage surface and air targets and to provide naval surface fire support for expeditionary operations. The MK 45 gun was developed as a lighter weight, more easily maintained replacement for the MK 42 5"/54 caliber 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.
