A contemporary advertisement for the P.B.7, May 1914. Note the nose-mounted gun.

A contemporary Pemberton-Billing Ltd advertisement from 1914, giving the leading particulars and a brief description of the P.B.7. The illustration shows the machine in flight at the top, and with its wings, tail and air propellers “slipped” after alighting on water. The two P.B.7 hulls were later converted into flying-boat tenders.

Front and side elevations of the P.B.2 project. Note the hull-mounted engine and the ‘winglets’ which formed the lower ‘plane