Bofors guns exported to Poland. The Model 1936 was a wet-mount used on Polish submarines while the Model 1940 was an AA gun used on Swedish minesweepers.

Actual barrel length may have been 41 calibers.

Gun Characteristics

Designation 10.5 cm/40 (4.1") Model 1936
10.5 cm/40 (4.1") Model 1940
Ship Class Used On Model 1936: Polish Orzel class submarines
Model 1940: Swedish Arholma class minesweepers
Date Of Design about 1935
Date In Service 1936
Gun Weight N/A
Gun Length oa N/A
Bore Length about 170 in (4.305 m)
Rifling Length N/A
Grooves N/A
Lands N/A
Twist N/A
Chamber Volume N/A
Rate Of Fire about 12 - 15 rounds per minute


Type Fixed
Complete Round Weight HE: N/A
Projectile Types and Weights HE: 35.3 lbs. (16 kg)
Bursting Charge HE: N/A
Projectile Length N/A
Propellant Charge N/A
Muzzle Velocity 2,297 fps (700 mps)
Working Pressure N/A
Approximate Barrel Life N/A
Ammunition stowage per gun N/A


Range with 35.3 lbs. (16 kg) HE
Elevation Distance
30 degrees about 13,120 yards (12,000 m)

Mount/Turret Data

Designation Single Mounts
Weight N/A
Elevation Model 1936: about -3 / +30 degrees
Model 1940: about -5 / +80 degrees
Elevation Rate Hand operated, only
Train 360 degrees
Train Rate Hand operated, only
Gun recoil N/A

Additional Pictures


"Naval Weapons of World War Two" by John Campbell
Special help from Maciej Tomaszewski of Army 1914-1945

Page History

04 February 2008 - Benchmark
07 August 2018 - Converted to HTML 5 format and added photographs of Polish submarine guns