Curtiss H-4

Two Curtis H-4 America flying boats were delivered from America to the U.K. in November 1914. Those planes may have originally been named the Curtis H-1s, and they were the prototypes for the rest of the line. Orders for twelve more followed in early 1915. All of the British H-4's were refitted with larger engines that the original 100hp Curitss engines. Later in 1915 another fifty were ordered and they were refitted with 100hp Anzani engines. The H-4s were always underpowered and they were mostly used for training duties, though some were used for patrol flights.

With the arrival of the larger Curtiss H-12 flying boats, the H-4s picked up the name Small America and the larger ones were the Large America.