6 inch 35 caliber naval gun 1877

6 inch 35 caliber naval gun 1877
Russian 6 inch 35 caliber naval gun in Suomenlinna
Type	Naval and coastal gun
Place of origin	Russian Empire
Service history
In service	1885–1917 Russian Empire 1917–1944 Finland
Used by	Russian Empire Finland
Wars	Russo-Japanese War First World War Second World War
Production history
Designer	A. F. Brink
Designed	1882[1]
Manufacturer	Obukhov State Plant
Variants	Hoop gun 1885 Wire-wound barrel 1887 New wire-wound barrel 1892
Specifications
Mass	8,500 kg (18,700 lb)[1]
Barrel length	5,349 mm (17 ft 7 in)[1]
Caliber	152.4 mm (6 in)[1]
Breech	Interrupted screw
Carriage	Vavasseur mount Dubrov mount Krel casemate mount[1]
Elevation	Vavasseur mount: -7° to +20° Dubrov mount: -5° to +15° Krel mount: -4° to +12°[1]
Traverse	Vavasseur mount: 360°[1]
Rate of fire	Theoretical: 4-5 rpm Practical: 1 rpm[1]
Muzzle velocity	600–700 m/s (2,000–2,300 ft/s) depending on ammunition [1]
Maximum firing range	15,000 m (16,000 yd)[1]

The 6 inch 35 caliber naval gun 1877 was a 152 mm naval gun used by the Russian Empire. The gun was used from 1887 as battleship secondary armament and cruiser armament. The gun was mostly replaced by newer 6 inch 45 caliber Canet gun 1892 at the time of the Russo-Japanese War, but was still used on some ships. During the First World War fourteen guns were used as coastal guns on Gulf of Finland in the Peter the Great's Naval Fortress and were taken over by Finland after Finland's Declaration of Independence in 1917. The guns were used by Finland in the Second World War.^[1][2] Russian model year 1877 refers to rifling system, not gun adoption^{[citation needed]}.