[3] Between November 1915 and 1918 it was the largest flying boat built and flown in the United Kingdom.

[4] The aircraft was an unequal-span, three-bay biplane of wood-and-fabric construction, the hull being mounted below the lower wing.

The two pilots were in an enclosed cockpit, the three gunners had open stations armed with machine guns.

[5] The incongruously-named Baby was used to prove the concept of a larger aircraft carrying aloft and launching a lighter aircraft – in this case a Bristol Scout – taking off carrying the Bristol and successfully releasing it on 17 May 1916,[5] a technique which came to be known variously as 'composite' or 'parasitic'.

The production Porte Babies were used to fly patrols over the North Sea from Felixstowe, RNAS Killingholme, Houton Bay, Orkney and Catfirth, Shetland.