The Hall Aluminum Aircraft Corporation was not terribly successful, but managed to sell nine PH-1 flying boats to the US Navy in 1930. Production of the PH recommenced in 1936 for the Coast Guard which ordered seven PH-2s, and seven PH-3s in 1939. These were the USCG's largest aircraft. Rudy Arnold photographed V164 off Coney Island - the building on the far right is the Half Moon Hotel which stood at West 29th Street. This one was lost in July 1939. The type was used for anti-submarine patrols during the war and kept in service until 1944. Photo by: Rudy Arnold / Smithsonian Institution

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