Another early addition to the locomotive fleet was No. 6 "Douglas", donated to the society by the Birmingham engineering firm Abelsons Ltd. This locomotive was built for the depot railway serving RAF Calshot where it worked until 1945, and, after rebuilding from its original gauge, it entered service in 1954. Through the 1950s the volunteers and staff members of the TRPS rebuilt the line and rescued it from its state of decay, during a period characterised by a ""Boy's Own" comic spirit of adventure, involving enthusiasm, ingenuity and a fair degree of irresponsibility".