Get the full story on your boat's mechanical system
The first book to cover the design, selection, installation and evaluation of mechanical systems on boats, Boat Mechanical Systems Handbook will be an invaluable guide for boat designers, builders, owners, buyers, mechanics, surveyors and insurers. Dave Gerr recommends design guidelines and components for drive trains, engine fuel and exhaust systems, bilge pumps, steering, ventilation, anchor handling systems and more.
Not a bad introduction to boat mechanical systems, but for serious engineering there are references specific to each system would be a lot more reliable to look at. Manufacture's specs or manuals would better if you just have a boat and have to something to it. It has some simple equations (mostly just multiplying things by a constant) for calculating a few things, which might be okay for a real quick estimate. There was also a mistake in one of examples where he was adding up percentages, which bugs me.