Book excerpt: This manual takes both novice and experienced boatowner through minor to major repairs of electrical systems, engines, electronics, steering systems, generators, pumps, cookers, spars and rigging. When it was first published in 1990, the Boatowner's Mechanical & Electrical Manual broke new ground. It was hailed as the first truly DIY manual for boatowners and has sold in its thousands ever since. There have been significant changes in boat systems since then, particularly electrical systems, and this fourth edition has been fully updated to reflect these developments and expand its predecessor's worldwide popularity. 'Probably the best technical reference and troubleshooting book in the world' Yachting Monthly 'It deserves to come standard with every boat' Yachting World