Main Gun - Mark 38 Heavy Machine Gun #1

Primary Function: Single barrel, air cooled, semi- and full-automatic, manually trained and elevated machine gun system
Contractor: Designed and assembled by Crane Division, Naval Surface Warfare Center; components procured from various contractors
Range: 2700 yards (2,457 meters)
Guidance System: Unstabilized, manually trained and elevated
Type of Fire: Single shot; 175 rounds per minute automatic
Caliber: 25 mm (1 inch)