Italy 3"/50 (7.62 cm) Model 1909

Description

A Vickers design used as anti-torpedo boat guns on battleships built before World War I.

Used in a few coastal batteries during World War II.

Designation	3"/50 (7.62 cm) Model 1909
Ship Class Used On	Conte di Cavour and Caio Duilio Classes
Date Of Design	1909
Date In Service	1914
Gun Weight	1.1 tons (1.2 mt)
Gun Length	N/A
Bore Length	150 in (3.810 m)
Rifling Length	N/A
Grooves	N/A
Lands	N/A
Twist	N/A
Chamber Volume	N/A
Rate Of Fire	10 rounds per minute

Type	Fixed
Weight of Complete Round	N/A
Projectile Types and Weights	AP: 13.2 lbs. (6 kg)
Bursting Charge	N/A
Projectile Length	N/A
Propellant Charge	N/A
Muzzle Velocity	2,676 fps (815 mps)
Working Pressure	N/A
Approximate Barrel Life	N/A
Ammunition stowage per gun	About 200 rounds

Range with 13.2 lbs. (6 kg) AP
Elevation	Distance
20 degrees	10,930 yards (10,000 m)

^The Cavour class used these guns in open mountings on top of the turrets, forecastle and upper works. The guns were transferable and there were 30 positions provided, although they never carried this many guns. Shortly after World War I they were reduced to 13 guns to provide space for the addition of six 3"/40 (7.62 cm) AA guns.
^The Duilio class arrangements for these guns were generally similar to the Cavour class with 39 positions provided. In 1925 they were reduced to 13 of these guns in order to provide for the addition of six 3"/40 (7.62 cm) AA guns.

"Naval Weapons of World War Two" by John Campbell
"The Cavour and Duilio Class Battleships" article by Giorgio Giorgerini in "Warship Volume IV"

01 August 2004 - Benchmark
26 May 2012 - Added ammunition stowage and information about mountings
12 September 2022 - Converted to HTML 5 format