RICHARD P. DE KERBRECH served his marine engineering apprenticeship with Shaw Savill & Albion Co. and Cammell Laird shipyard. Later an inspector with the Naval Overseeing service, he went on to lecture in mechanical engineering. He has written 18 books and is a life member of the World Ship Society and a member of The Royal Institution of Naval Architects. DAVID L. WILLIAMS is a commercial & industrial photographer and author, previously responsible for the aircraft and hovercraft in-service support operation of Westland Aerospace. He also spent time working aboard lighthouse tenders and cable layers, has written 35 books on shipping and related subjects, and is an Associate of the British Institute of Professional Photographers and member of the World Ship Society. Both live on the Isle of Wight.