What might replace HMS Unicorn's anti-aircraft battery in a 1954 rebuild?
Short answerProbably many 40 mm guns, possibly with the 4-inch weapons removed and an early missile system added if timing allowed.
NotesThe exact fit depends on the scope and timing of the abandoned rebuild. Numerous 40 mm anti-aircraft guns are the most likely replacement for much of Unicorn's older battery. The ship might lose her 4-inch weapons. If the programme matured late enough, an early missile system is also conceivable, although the answer remains tentative.