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The 8.8 cm SK L/30 gun weighed 644 kilograms (1,420 lb) and had an overall length of about 2.64 meters (8 ft 8 in). It used the Krupp horizontal sliding block, or "wedge", as it is sometimes referred to, breech design. In addition to mounts for surface ships there was also a submarine version which was on either a retractable or fixed pivot mount.
The 8.8 cm SK L/45 gun weighed 2.5 metric tons (2.5 long tons; 2.8 short tons) and had an overall length of about 4 meters (13 ft 1 in). It used a vertical sliding-block, or "wedge", as it is sometimes referred to, breech design.
The 21 cm SK L/45 was constructed of A tube, two layers of hoops, a jacket and used a horizontal sliding-wedge breech block. Unlike other large naval guns of the time, which used separate loading bagged charges and ammunition, the 21 cm SK L/45 used separate loading ammunition with charges inside of a brass cartridge case to provide obturation .
Section of the double wedge sliding breechblock of a C64 field gun, an early breech-loading field gun. [13] The sliding breechblock consists of two opposed wedges. The screw mechanism moves the wedges relative to each other, to change the effective thickness of the breechblock. Expanding the block locks it in the closed position and seals the ...
Although designated as 28 cm (11 in), its actual caliber was 28.3 centimeters (11.1 in). It used the Krupp horizontal sliding-block breech design (or “wedge”, as it is sometimes referred to) rather than the interrupted screw commonly used in heavy guns of other nations. This required that the propellant charge be loaded in a metal, usually ...
The 8.8 cm SK L/35 was a widely used naval gun on many classes of World War I battleships, cruisers and torpedo boats in both casemates and turrets. Its primary use on battleships and cruisers was as an anti-torpedo boat gun, while on torpedo boats it was their secondary armament. Ship classes that carried the 8.8 cm SK L/35 include: