This weapon was similar to the British 4.7"/45 (12 cm) Mark IX but differed in that the Vickers "E" guns were wire wound for part of their length, had slightly different chamber dimensions and in having an inner A tube with only 28 rifling grooves. These "E" guns were built solely for export and were not used on British warships.

Gun Characteristics

Designation 4.7"/45 (12 cm) Vickers "E"
Ship Class Used On
  • Argentina: Cervantes, Corrientes and Mendoza classes
  • Chile:
    • Serrano destroyer class
    • Capitan O'Brien submarine class
Date Of Design about 1927
Date In Service 1928
Gun Weight about 2.963 tons (3,011 kg)
Gun Length oa N/A
Bore Length 212.6 in (5.400 m)
Rifling Length N/A
Grooves (28) N/A x N/A
Lands N/A
Twist N/A
Chamber Volume N/A
Rate Of Fire 7 - 10 rounds per minute


Type Separate
Projectile Types and Weights HE: 48.5 lbs. (22 kg)
SAP: 48.5 lbs. (22 kg)
Bursting Charge N/A - TNT
Projectile Length N/A
Cartridge Case Type, Size and Empty Weight Brass, N/A
Propellant Charge Argentina: 13.5 lbs. (6.12 kg) CSP2
Chile: 11.75 lbs. (5.33 kg) MD 19
Muzzle Velocity Argentina: 2,789 fps (850 mps)
Chile: 2,658 fps (810 mps)
Working Pressure 20 tons/in2 (2,150 kg/cm2)
Approximate Barrel Life 1,400 rounds
Ammunition stowage per gun N/A


With 48.5 lbs. (22 kg) HE Shell
Elevation Distance
Range @ 30 degrees about 15,800 yards (14,450 m)

Mount/Turret Data

  • Single Mountings:
    • Argentina:
      • Mendoza (5) and Cervantes 1 (5): Destroyer Mounting
    • Chile:
      • O'Brien (1): Submarine Mounting
      • Serrano (3): Destroyer Mounting
Weight About 8.8 tons (8.9 mt)
Elevation about -10 / +45 degrees
Elevation Rate Manually operated, only
Train about +150 / -150 degrees
Train Rate Manually operated, only
Gun recoil N/A

Gun shields on the Vickers "E" guns were pedestal types with abbreviated shields very similar to those used for the British 4.7"/45 (12 cm) BL Mark I mountings.

  • ^The Cervantes class lost their midships 4.7" (12 cm) gun after World War II and this was replaced with two twin 40mm/60 mountings.

Additional Pictures

External Pictures

4.7"/45 (12 cm) Mark E: Single Mark IX Chilean and 4.7 Field Gun

Some of these photographs show weapons with abbreviated shields and have a "1929" date. Although these are identified as Mark IX guns, I believe that they are actually Vickers "E" type 4.7" (12 cm) guns. Note in these photographs that although this gun had high-angle capability, doing so meant that the loading apparatus was below the gun deck level. This means that either these guns could not actually be used at high elevations or that there needed to be a gun well around the mounting.


Data from:

  • "Naval Weapons of World War Two" and "British Naval Guns 1880-1945 No 15" article in "Warship Volume IX" both by John Campbell
  • "Destroyers of World War Two" by M.J. Whitley

Page History

14 March 2016
Created new page from Britian 4.7"/45 (12 cm) Marks 9 and 12