Sweden
12 cm/50 (4.7") Model 1942
Updated 10 May 2006
A semi-automatic design that did not enter service until after World War II.
WNSweden_47-50_m1942_Oland_pic.jpg

Swedish Destroyer Oland
Royal Swedish Navy Photograph
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Gun Characteristics
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Designation 12 cm/50 (4.7") Model 1942
Ship Class Used On Oland and Östergötland classes
Date Of Design 1942
Date In Service 1945
Gun Weight N/A
Gun Length N/A
Bore Length about 236.2 in (6.000 m)
Rifling Length N/A
Grooves N/A
Lands N/A
Twist N/A
Chamber Volume N/A
Rate Of Fire 20 rounds per minute
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Ammunition
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Type Separate
Projectile Types and Weights HE - 52 lbs. (23.5 kg)
Bursting Charge N/A
Projectile Length N/A
Propellant Charge N/A
Muzzle Velocity 2,790 fps (850 mps)
Working Pressure N/A
Approximate Barrel Life N/A
Ammunition stowage per gun N/A
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Range
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Elevation With 52 lbs. (23.5 kg) HE Shell
Range @ 45 degrees 20,890 yards (19,100 m)
AA Ceiling about 9,800 feet (9,000 m)
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Mount / Turret Data
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Designation Twin Turrets
   Oland (2) and Östergötland (2)
Weight  about 67 tons (68 mt)
Elevation -10 / +80 degrees
Elevation Rate N/A
Train about +150 / -150 degrees
Train Rate N/A
Gun recoil N/A
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Data from
"Jane's Pocket Book 9:  Naval Armament" edited by Denis Archer
"Destroyers of World War Two" by M.J. Whitley