A clear, concise and logical introduction to boat electrics. An understanding of this subject is essential for any skipper--salt water is a harsh environment for wires and chips and problems can occur at any time, both in harbour and at sea. Featuring fantastic, clear, colour graphics. Topics include: What is electricity? Where electricity comes from (the engine, shore power, a generator, renewable sources). How the boat is wired. Instruments. Laptops. Charging the batteries. Troubleshooting.