O.Thetford British Naval Aircraft since 1912 (Putnam)
This three-engined (two tractor and one pusher) flying-boat was built by May, Harden and May of Southampton to the designs of Sqn Cdr Porte. Eleven Porte Babies (Nos.9800 to 9810) were built and saw service on North Sea patrols from Felixstowe and Killingholme. The Baby first entered service in November 1916. Two 250 hp Rolls-Royce and one 200 hp Green engine in early versions; later Babies had three 325 hp Rolls-Royce Eagle VII or 300 hp Eagle VIII engines. Crew of five. Loaded weight, 18.000 lb. Maximum speed, 92 mph at sea level. Service ceiling, 8.000 ft. Span, 124 ft. Length, 63 ft.
H.King Armament of British Aircraft (Putnam)
Porte Baby. The design of this three-engined flying-boat dated back to 1916, and during its existence the craft was used for some notable armament experiments. Thus, a 6-pdr Davis recoilless gun was fitted in the bows, and on another occasion two 14-in torpedoes were slung one beneath each lower wing. The effectiveness of machine-gun armament was restricted by hull-form and construction, but hatchway or window guns may well have been intended or installed behind the cockpit.
The carrying of a fighter aeroplane (Bristol Scout) on the top wing, and a successful launching in flight, is a further distinction to the credit of this early flying-boat, and one which may fairly be included under the heading of 'armament'.