Anti-aircraft gun designed by Bofors for Coastal Defense ships. Used a semi-automatic horizontal sliding breech block.
Actual overall length was 50 calibers.
|Designation||105 mm/50 (4.1") Model 1932 Bofors|
|Ship Class Used On||Väinämöinen class|
|Date Of Design||about 1930|
|Date In Service||1932|
|Gun Weight||2.51 tons (2.55 mt) with breech mechanism|
|Gun Length oa||206.7 in (5.250 m)|
|Bore Length||about 194.3 in (4.935 m)|
|Rate Of Fire||15 rounds per minute 1|
- ^Automatic rammers powered from hydro-pneumatic accumulators gave these guns a high rate of fire.
|Complete Round Weight||HE: 55.6 lbs. (25.2 kg)|
|Projectile Types and Weights||HE: 35.3 lbs. (16 kg)|
|Bursting Charge||HE: N/A|
|Propellant Charge||9.04 lbs. (4.1 kg)|
|Muzzle Velocity||2,625 fps (800 mps)|
|Approximate Barrel Life||N/A|
|Ammunition stowage per gun||N/A|
|45 degrees||19,900 yards (18,200 m)|
|AA ceiling @ 85 degrees||39,400 feet (12,000 m)|
|Designation||Twin Mounts: Väinämöinen (4)|
|Weight||21.75 tons (22.1 mt)|
|Elevation||-10 / +85 degrees|
|Elevation Rate||Hand operated, only|
|Train||about -/+ 100 degrees|
|Train Rate||Hand operated, only|
It is unclear from photographs if there was any sort of time-fuze setting mechanism in the mounting. The fuzes may have needed to be set by hand. If so, then these weapons would have been limited to barrage firing.
- "Naval Weapons of World War Two" by John Campbell
- Kosaku Ariga (Jarek) website