Curtiss Aeroplane and Motor Company independently developed its design in small model F, larger model K (of are several of which which were some have been sold to the Russian Naval Air Service), and model C for U.S. Navy; among others Grumman, Northrop, also developed the Felixstowe F.5 as Curtiss F5L on the final Porte hull designs and powered by World Liberty engines in United States.
The Curtiss Aeroplane and Motor Company independently developed its designs into the small Model F, the larger Model K (several of which were sold to the Russian Naval Air Service), and the Model C for the U.S. Navy. Curtiss, among others, also built the Felixstowe F.5 as the Curtiss F5L, based on the final Porte hull designs and powered by American Liberty engines.