A METAL version of the famous Savoia S.55 twin‐hull seaplane has been constructed to the designs of Signor G. Gabrielle by the Societa Anonima Piaggio, of Pisa, and as a result an interesting comparison between wood and metal construction has been obtained. The metal seaplane, precisely the same in all respects, including equipment, as its wooden prototype, has effected a saving in weight of 535 kgs. (1,177 lb.), with a “factor of safety” of 9 as against 7.4.
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