High Quality Content by WIKIPEDIA articles! The QF 4.5 inch (113 mm) gun has been the standard medium-calibre gun used by the Royal Navy as a medium range weapon capable of use against surface, aircraft and shore bombardment targets since 1938. This article covers the early 45-calibre family of guns up to the 1970s. For the current unrelated 55-calibre Royal Navy gun, see 4.5 inch Mark 8 naval gun, manufactured by BAE Systems. Like all British nominally 4.5 inch naval guns, the QF Mk I has an actual calibre of 4.45 inches (113 mm). From the BL Mark I of 1916, the QF 4.7 inch gun (120 mm) was the mid-calibre weapon of choice for the Royal Navy, used particularly on destroyers. Apart from some ships armed with QF 4 inch guns due to supply problems, it remained the standard weapon for destroyers up to the W class destroyers of 1943. However, its usefulness as an anti-aircraft weapon had been limited by the failure to develop a mounting with elevation over 55°, the lack of a predictive fire control system in destroyer classes built prior to the introduction of the 4.7" twin mount, (see HACS) and the setting of fuzes by hand on early, prewar, mountings.

Данное издание не является оригинальным. Книга печатается по технологии принт-он-деманд после получения заказа.