The QF 3.7-inch is a British naval gun developed during World War II. It was designed for use on ships and was known for its versatility and effectiveness against both air and surface targets. The gun had a caliber of 3.7 inches (94 mm) and was capable of firing high-explosive shells, making it a valuable asset in naval warfare. This artillery piece was often mounted on various classes of ships, including destroyers and cruisers. Its design allowed for rapid firing, which was crucial for engaging fast-moving enemy aircraft. The QF 3.7-inch played a significant role in the defense of Allied naval forces during the conflict.