Curtiss H.8 America
The two-engine Curtiss flying boat America was built in 1914 for an attempted flight across the North Atlantic. Before it could be completed Britain was at war with Germany. John Porte, the intended pilot, returned to the Navy, closely followed by the America, which became the forerunner of all the large Curtiss flying boats.
By July 1916 first examples of a larger Curtiss flying boat design began arriving in England. Designated H.8, these were quickly modified to accept more powerful twin 250-hp Rolls-Royce engines, and redesignated Curtiss H.12s, or 'Large Americas'.
20 similar models that were either modified or manufactured in England, marking the beginning of England's flying-boat industry. The aircraft were used extensively for antisubmarine patrol.