 Lawrence had experience using this type of vessel, having assisted with the 1929 Schneider Trophy race while at the helm of a Biscayne Baby, a fast boat when the temperamental engines were running.Meanwhile, Hubert Scott-Paine, the designer of the record breaking Miss Britain III and Miss England boats and founder of the British Power Boat Company (BPBC), made a similar offer of his expertise to the RAF and he soon began to collaborate with Lawrence in the development of long high-speed launches, purpose-built for sea rescue.The result, built by the BPBC, was the 200-Class Seaplane tender; powered by two 100 HP engines it had a top speed of over 36 knots.