Ensuring a boat's electrical system is reliable before setting out on any cruise is one of the best investments that can be made for peace of mind and enjoyable cruising. Intended to help boatowners make their on-board electrical systems as reliable and efficient as possible, this book answers the following questions: Is he/she confident of his/her electrical systems? will it let the owner down when cruising? will there be sufficient power? is there a risk of system overload?