Naval Aircraft Factory PN
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The Naval Aircraft Factory PN was a series of open cockpit American flying boats of the 1920s and 1930s. A development of the Felixstowe F5L flying boat of the First World War, variants of the PN were built for the United States Navy by Douglas, Keystone and Martin.
Naval Aircraft Factory PN
Naval Aircraft Factory PN-9, illustrating the characteristic hull chines
Douglas PD-1s of VP-4 over Hawaii, in 1930
A Keystone PK-1
Felixstowe F5L
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The twin-engine F5L was one of the Felixstowe F series of flying boats developed by John Cyril Porte at the Seaplane Experimental Station, Felixstowe, England, during the First World War for production in America.
Felixstowe F5L
The first Naval Aircraft Factory F5L, 24 July 1918.
Aeromarine 75 Columbus flying over Bimini in the Bahamas, 1921.