|Designation||Elswick Pattern "EE"
|Ship Class Used On||Elswick: Dante, Cesare, Quarto, Leonardo Marsala
Vickers: Leonardo da Vinci, Cavour
Coastal batteries only by World War II.
|Weight||Elswick (with breech mechanism): 3.37 tons (3.42 mt)|
|Muzzle velocity||2,756 fps (840 mps) with 50.15 lbs (22.75 kg) shell|
|Ship Class Used On||AMCs, troop transports and coast-defense batteries|
|Elevation||-10 / +30 degrees|
|Muzzle velocity||2,460 fps (750 mps) with 51.0 lbs. 23.15 kg) shell|
|Range||13,800 yards (12,600 m)|
Derived from the older 120 mm/40 (4.7") gun, this was in an open pedestal mounting.
|Ship Class Used On||Pre-World War II: Balilla and Fieramosca
Removed from submarines prior to World War II and then used as AA guns at Messina
|Muzzle velocity||2,395 fps (730 mps) and ceiling of 25,600 ft. (7,800 m) with 42.7 lbs. (19.4 kg) shell|
"Naval Weapons of World War Two" by John Campbell
"Italian Warships of World War II" by Aldo Fraccaroli
"Destroyers of World War Two" by M.J. Whitley
14 May 2006 - Benchmark
26 May 2012 - Updated to latest template
17 January 2017 - Added data on 120 mm/45 Armstrong Model 1918 and converted to HTML 5 format