Daily Mail's £10,000 prize for crossing the Atlantic
Algernon E. Berriman wrote in 1913 that such a flight would be impossible with contemporary technology. Supposing that it would take 30 hours to fly 2000 miles at 70 miles per hour, he calculated that the fuel required would weigh six times the maximum capacity.
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- Berriman, 1913, Aviation, pp. 301–302.