The Spitfire’s development through the war was astonishing. The power of the final mark, the Seafire 47, was such that it was equivalent to the original Spitfire I of 1938 taking off with thirty-two airline passengers on board complete with their baggage.11 The top speed had gone from 362mph to 452mph, the rate of climb to 20,000ft from 9.4 minutes to 4.8 minutes, the range from 575 miles to 1,475 miles.12 The RAF found a model that worked and stuck with it, every variant proving it could at least contend with, if not outdo German developments. Nearly 23,000 Spitfires, including the navy
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