|20 mm Machinegun|
This is a 20 mm Oerlikon anti-aircraft machine-gun, which fires 450 rounds per minute with a muzzle-velocity of 820 m/sec. and a range of 2 km. The gun is of Swiss design and was used by navies all over the world. Some countries still use it.This model was mounted on all mine-sweepers of the Ø-Class.