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 World War I from an original design by the American designer Glen Curtiss.
Made by Canadian Aeroplanes Ltd.Curtiss Aeroplane and Motor CompanyNaval Aircraft FactoryCurtiss Aircraft and.
It is the successor of the Felixstowe F.5 .