12.7 cm SK C/34 naval gun

The 12.7 cm SK C/34 was a German medium-caliber naval gun deployed on destroyers from 1934 through the Second World War. Some of these guns remained in service until 2003 in the coastal defense units of Norway.

Characteristics
The gun could be depressed to -10° and raised to 30°. It had an arc of fire of 360°, meaning that they could rotate a full circle, able to fire at any given point. The gun fired a 28 kg high-explosive shell at a muzzle velocity of 830 m/s to a range of 17400 m.

Weapons of comparable role, performance and era

 * 4.7 inch QF Mark IX & XII : equivalent British destroyer guns, firing slightly lighter shell.
 * 5"/38 caliber gun : equivalent US gun, but unlike the German gun had dual-purpose mount allowing anti-aircraft fire.