The 10.5 cm SK L/45 was a German naval gun that was used in World War I and World War II and was the successor of the older 10.5 cm SK L/40 naval gun.
The gun from the submarine SM UB-91, displayed as a memorial at Chepstow in Wales
Gun from SM U-19 in Bangor
The QF 4 inch Mk V gun was a Royal Navy gun of World War I which was adapted on HA mountings to the heavy anti-aircraft role both at sea and on land, and was also used as a coast defence gun.
10.5 cm SK L/45 naval gun
…List of naval guns QF 4 inch Mk V naval gun Approximate British equivalent firing slightly lighter shell 4"/50 caliber gun Approximate US equivalent, firing slightly lighter shell at higher…
QF 4 inch HA guns aboard the cruiser HMAS Sydney, 1939–1940
LA (Low Angle) gun and crew on HMS Galatea, February 1917
LA (Low Angle) gun on HMAS Vampire firing circa 1938
Crew storing fixed rounds on the Kingfisher-class sloop Widgeon, August 1943