The Felixstowe F.5 was a British First World War flying boat designed by Lieutenant Commander John Cyril Porte, RN of the Seaplane Experimental Station in Felixstowe.

The Felixstowe F.5 was intended to combine the good qualities of the F.2 and F.3, with the prototype (N90) first flying in November 1917.

[citation needed] The F.5 did not enter service until after the end of the First World War but replaced the earlier Felixstowe boats (together with the Curtiss machines) to serve as the Royal Air Force's (RAF) standard flying boat until being replaced by the Supermarine Southampton in 1925.

[citation needed] United Kingdom United States Japan – (Post-war) Data from Aircraft of the Royal Air Force[18]General characteristics Performance Armament

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