These were Armstrong/EOC Patterns "B" and "C" and Vickers Mark "D" used on armored cruisers including the Greek armored cruiser Georgios Averof (aka Averov or Averoff) which was built in Italy. These guns were removed from the cruiser Pisa following her decommissioning in 1937. Two of them (or the Vickers Mark D which had similar performance) were then mounted on the pontoon GM216. It is possible that some of the remaining guns were used in coastal artillery batteries.
Twenty-four of these guns were still in service as of June 1940.
Construction is believed to have been 'A' tube, inner 'A' tube, wire winding for 75% of their length, 'B' tube and jacket. Actual bore diameter of all guns was 7.5" (19.1 cm).
| Designation | 190 mm/45 (7.5") V (Vickers) 1906
190 mm/45 (7.5") A (Armstrong/EOC) 1908 |
|---|---|
| Ship Class Used On | Italy - Armstrong/EOC Pattern C: San Giorgio and Pisa Classes
Italy - Vickers Mark D: San Marco Greece - Armstrong/EOC Pattern B: Georgios Averof |
| Date Of Design | 1906/1908 |
| Date In Service | 1910 |
| Gun Weight | 13.77 tons (14.99 mt) |
| Gun Length oa | 350.6 in (8.905 m) |
| Bore Length | 337.5 in (8.573 m) |
| Rifling Length | N/A |
| Grooves | N/A |
| Lands | N/A |
| Twist | N/A |
| Chamber Volume | 1,313.6 in3 (69.24 dm3) |
| Rate Of Fire | 2.6 rounds per minute |
| Type | Bag |
|---|---|
| Projectile Types and Weights | AP: 200.4 lbs. (90.9 kg) |
| Bursting Charge | N/A |
| Projectile Length | N/A |
| Propellant Charge | about 71.2 lbs. (32.3 kg) |
| Muzzle Velocity | 2,835 fps (864 mps) |
| Working Pressure | N/A |
| Approximate Barrel Life | N/A |
| Ammunition stowage per gun | N/A |
| Elevation | Distance |
|---|---|
| 25 degrees | about 24,000 yards (22,000 m) |
| Designation | Twin Turrets
Italy: Pisa (4) and San Marco (4) Greece: Georgios Averof (4) |
|---|---|
| Weight | N/A |
| Elevation | -7 / +25 degrees |
| Elevation Rate | N/A |
| Train | about +80 / -80 degrees |
| Train Rate | N/A |
| Gun recoil | N/A |
| Loading Angle | N/A |
Campbell, John
- "British Naval Guns 1880-1945 No 9" article in "Warship Volume VII"
- "Naval Weapons of World War Two"
Fraccaroli, Aldo
- "Italian Warships of World War II"
Friedman, Norman
- "Naval Weapons of World War One"
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Marina Militare
28 December 2008 - Benchmark
13 September 2011 - Added link to 3"/40 (7.62 cm) gun and construction details
24 October 2026 - Converted to HTML 5, added photograph of Averof, reorganized Sources section