German Type UC III submarine
Type UC III minelaying submarines were used by the Imperial German Navy during World War I. They displaced 474 tonnes at the surface and 571 t submerged, carried guns, 7 torpedoes and up to 14 mines. The ships were double-hulled with improved range and sea-keeping compared to the UC II type. The type had better seagoing, maneuvering and turning capabilities than its predecessor, while underwater stability was reduced.
UC-93 in Italy, 1918
The 8.8 cm SK L/30 (SK - Schnelladekanone L - Länge was a German naval gun that was used in World War I on a variety of mounts.
8.8 cm SK L/30 naval gun