These RC boat books will teach you techniques on all aspects of radio controlled boats.
Model boats span a broad range of subjects, so so far I have not seen many books that cover all aspects of RC boats. Some deal mostly with kits, even conversions from static models to RC. Others go full bore into scratch building.
Instead, they are often specialized for a specific interest such as: model yachts, racers, scale model mahogany boats, warships, merchant ships etc.
The books listed here are for all aspects of RC boats. Here are some other useful books for model boat builders: