57 mm kanon M/89B

57 mm kanon M/89B
Type	Naval gun
Place of origin	Sweden
Production history
Manufacturer	Finnspong, Stockholm Vapenfabrik, Bofors
Variants	M/89, M/92
Specifications
Mass	380 kg (840 lb)
Length	3.108 m (10 ft 2 in)
Barrel length	2.517 m (8 ft 3 in) (L/50)
Shell weight	2.7 kg (6 lb)
Caliber	57 mm (2.2 in)
Muzzle velocity	856 m/s (2,810 ft/s)

The 57 mm kanon M/89B was a Swedish naval gun deployed aboard early destroyers as their secondary armament.

The M89 gun had a shorter 45-caliber barrel that gave the gun a muzzle velocity of 659 m/s (2,163 ft/s) and a weight of 749 lb (339.7 kg).

Bibliography

• Friedman, Norman (2011). Naval Weapons of World War One: Guns, Torpedoes, Mines and ASW Weapons of All Nations; An Illustrated Directory. Barnsley, UK: Seaforth Publishing. ISBN 978-1-84832-100-7.