C.E.1 (Coastal Experimental No 1)

The Royal Aircraft Factory began developing its sole flying boat, the C.E.1 (Coastal Experimental No 1), in February 1917. This aircraft was a two-seater, four-strut wooden biplane. A total of two prototypes were built: the N97, fitted with a 230 hp RAF3a engine, and the N98, featuring a powerful 260 hp Sunbeam Maori engine.

Maiden Flight and Comparative Trials

The first flight of the N97 occurred on January 17, 1918, with the second prototype following suit shortly after. Both aircraft were transferred for comparative testing to the center on Grain Island. As a result of the competition, the Felixstowe company emerged victorious with its F.2 flying boat.

Contribution to Research

Subsequently, both C.E.1 aircraft were utilized in a series of research programs by the National Physical Laboratory.

Technical Specifications

Modification	CE.1
Wingspan, m	14.33
Length, m	11.05
Height, m	4.06
Wing area, m2	56.58
Empty weight	1470 (1516)
Maximum takeoff weight	2227 (2267)
Engine type	1 Piston engine RAF 3a (Sunbeam Maori)
Power, hp	1 x 230 (260)
Maximum speed, km/h	142 (148)
Cruising speed, km/h	120 (125)
Endurance, h	4.30 (3.45)
Service ceiling, m	2072 (2286)
Crew, crew	2
Armament:	(planned) three 7.7-mm Lewis machine guns, two 104-kg depth charges

Image gallery of the C.E.1 (Coastal Experimental No 1)