A comprehensive guide to the installation, operation and maintenance of propulsion systems for scale model ships, emphasising practical advice. Beginning with the choice of model and the propulsion system to go with it, the author goes on to describe both electric and steam systems, including the fitting and care of battery packs, radio control and the operation of steam boilers, with particular emphasis on the safety requirements when dealing with pressurized containers. Both paddle-wheels and screw propellers are covered, as well as specialist propulsion units such as variable-pitch propellers, azimuth thrusters and Voith Schneider units and their particular advantages and operational requirements. Throughout the book, reference is made to full-scale practice as the basis of what the modeller is trying to achieve. Extensive data tables and appendices with addresses of suppliers of materials and equipment complete this practical handbook.