USS Slater DE-766
20mm Oerlikon Cannon Specifications:
Bore: 20mm/70 Caliber
Shell Weight : 0.25lbs
Shell Length: 7.18 inches
Shell Types: Anti Aircraft Hi Explosive & Armor Piercing
Horizontal Range : 4,800 yds (2.7 miles) at 40° elevation
Maximum Verticle Range: 10,000 feet at 90° elevation
Rate of Fire : 470 Rounds Per Minute
Ammo Drum Capacity: 60 Rounds
Muzzle Velocity: 2,700fps
Gun Weight: 150lbs (each gun)
Crew: 5
Number of Mounts: 6 Dual Mounts, 12 Guns Total
Entered US Service: 1942