28 cm SK L/50 gun
The 28 cm SK L/50 was a German naval gun that was used in World War I and World War II. Originally a naval gun, it was adapted for land service after World War I.
Description
The 28 cm SK L/50 gun weighed, had an overall length of and its bore length was. Although called, its actual caliber was. It used the Krupp horizontal sliding-block, or "wedge", as it is sometimes referred to, breech design rather than the interrupted screw used commonly used in heavy guns of other nations. This required that the propellant charge be loaded in a metal, usually brass, case which provides obturation i.e. seals the breech to prevent escape of the expanding propellant gas.
In shipboard use, these guns were mounted in twin turrets as the primary battery of three German battlecruisers: the two ships of the Moltke class plus, each mounting five of these turrets for a total of ten guns.
A C/37 Coastal Mounting was utilised for coastal guns. Battery Coronel at Borkum, Germany mounted four guns and Battery Grosser Kurfürst at Framzelle, France mounted four.