20.3 cm/45 Type 41 naval gun

Type 41 203 mm 45 caliber naval gun
Right elevation diagram of an 8-inch center pivot mounting for Japanese cruiser Takasago.
TypeNaval gun
Coastal artillery
Place of originJapan
Service history
In service1908–1945
Used by Imperial Japanese Navy
WarsWorld War I
World War II
Production history
DesignerElswick Ordnance Company
Specifications
Mass18.75–19.4 t (18.45–19.09 long tons)
Length9.487 m (31 ft)
Barrel length9.114 m (30 ft) bore

Caliber203 mm (8.0 in)
ActionManual
BreechSingle motion interrupted screw
Elevation-5° to +30°
Traverse+/- 150°
Rate of fire2 rpm
Muzzle velocity760 m/s (2,500 ft/s)
Effective firing range18,000 m (20,000 yd) at +30°

The 20.3 cm/45 Type 41 naval gun was a Japanese naval and coast-defense gun used on cruisers of the Imperial Japanese Navy from the Russo-Japanese War through the end of World War II.


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