The author is one of the foremost international authorities on marine electrical systems, with some hefty volumes on the subject to his name. He is also a longtime cruiser, so the knowledge he imparts is from both technical and practical experience. Understanding Boat Corrosion... is not a tome. It is only slightly larger than pocket-sized, yet its concise, compact nature, combined with illustrations, does make the subject easier to understand. It is a useful book to have on hand, covering galvanic corrosion and how to avoid it, stray current corrosion, protecting your boat, reading zinc anodes, components in lightning, lightning protection and interference.