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 Curtiss 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 Curtiss 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.

Those with the original Curtiss engines became known as the America 950 type and they carried 12&#215; or 2&#215; bombs; those with the 160hp Curtiss engines were known as the America Improved and carried up to 4&#215; bombs. The type was declared obsolete in August 1918 and only three survived the war.