8.8 cm SK L/45 naval gun

The 8.8 cm SK L/45 (SK - Schnelladekanone (quick loading cannon) L - Länge (with a 45-caliber barrel) was a German naval gun that was used in World War I on a variety of mounts.

Description
The 8.8 cm SK L/45 gun weighed 2.5 t and had an overall length of about 4 m. It used a vertical sliding block, or "wedge", as it is sometimes referred to, breech design.