This front view of a Curtiss H-4 'Small America' flying boat shows the very shallow angle of the planing base of the hull and the two 100hp Anzani engines installed on many of the British H-4s to improve their performance.
How to cite this article:
Rickard, J (19 March 2021), Curtiss H-4 with Anzani Engines , http://www.historyofwar.org/Pictures/pictures_curtiss_H4_front.html