I got this from FAS.ORG. Ten mile range.
MK 75 76mm/3-inch gun
The Mark 75 three-inch gun is a capable gun in between the Mark 45 and Mark 38. Range is 10 nautical miles and is rated at 80 rounds per minute. Because of performance, lightweight and low manning requirements, the the lightweight, rapid-fire MK 75 is suited for installation on small combat vessels.
Specifications
Primary Function Single barrel, lightweight, water-cooled, rapid fire, remote controlled, dual purpose automatic enclosed naval gun
Contractor Designed by OTO Melara, Italy
Manufactured by FMC Naval Systems Division and OTO Melara
Range 10 nautical miles (11.5 statue miles, 18.4 km)
Guidance System Remotely controlled
Type of Fire 80 rounds per minute automatic
Caliber 76 mm (3 inch)
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Ben Franklin (1706-1790)
