"Pom-pom" gun that was originally made by Maxim and later taken over by Vickers. This was basically a scaled-up version of the Maxim 0.303" (7.7 mm) Machine Gun. Like the MG, the 1-pdr was belt-fed and recoil operated.

Extensively used as an AA weapon during World War I.

Gun Characteristics

Designation VSM 1-pdr (0.45 kg) [1.46" (37 mm)] Mark I
Ship Class Used On Many
Date Of Design about 1890
Date In Service about 1895
Gun Weight N/A
Gun Length oa N/A
Bore Length N/A
Rifling Length N/A
Grooves N/A
Twist N/A
Length Of Rifling N/A
Chamber Volume N/A
Rate Of Fire Cyclic: About 100 rounds per minute


Type Fixed
Weight of Complete Round N/A
Projectile Types and Weights HE: 1.39 lbs. (0.56 kg)
Bursting Charge HE: N/A
Projectile Length HE: N/A
Cartridge Case Type, Size and Empty Weight Brass, 37 x 94R mm, N/A
Propellant Charge N/A
Muzzle Velocity 1,204 fps (367 mps)
Working Pressure N/A
Approximate Barrel Life N/A
Ammunition stowage per gun N/A

Mount/Turret Data

Designation N/A
Weight N/A
Elevation N/A
Elevation Rate Manually operated, only
Train 360 degrees
Train Rate Manually operated, only
Gun recoil N/A

Additional Pictures


Data from:

  • "Naval Weapons of World War Two" by John Campbell
  • "US Naval Weapons" by Norman Friedman
  • "Rapid Fire" by Anthony G. Williams