12 cm/45 3rd Year Type naval gun

Type 3 120 mm 45 caliber naval gun
Bow gun on Yūnagi, September 1936
Type	Naval gun Coast defense gun
Place of origin	Japan
Service history
In service	1919–1945
Used by	Imperial Japanese Navy
Wars	World War II
Production history
Designed	1895
Variants	Type 11
Specifications
Mass	3,240 kg (7,140 lb)
Barrel length	5.4 m (18 ft) bore
Shell	120 x 550 mm.R.[1] Separate loading cased charges and projectile
Shell weight	20.3 kg (45 lb)
Caliber	120 mm (4.72 in)
Action	Manual
Breech	Single motion interrupted screw Welin breech block
Recoil	Hydro-pneumatic
Elevation	-7° – +33°
Traverse	+120°- 120°
Rate of fire	5–6 rpm
Muzzle velocity	825 m/s (2,710 ft/s)
Effective firing range	16 km (10 mi) at 33°

12 cm/45 3rd Year Type naval gun was a Japanese naval gun and coast defense gun used on destroyers, and torpedo boats of the Imperial Japanese Navy during World War II.