Landplanes are speedier and more efficient than seaplanes, because they have no bulky floats to add weight and increase air resistance. Landplanes are used, accordingly, on the London-Paris air route, though they have to fly over an angry strip of the English Channel. Even a landplane, however, will float for some time.
The empty space of the fusilage provides quite a large degree of buoyancy, till the water leaks through the cloth covering. To test the flotation of one of the huge air liners, the British Air Ministry has determined on an...
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