Endorsed by some of the world’s most popular nautical publications, The Boatowner’s Mechnical and Electrical Manual has all the basics of troubleshooting nearly every aspect of your boat. From pumps and propellers to stoves and spars; from winches and wind vanes to rigging and refrigeration – all the particulars you need for fixing, restoring, and improving your boat are now available at the touch of a finger. Author Nigel Calder is widely acknowledged as an expert boat systems maintenance. A diesel mechanic for more than 25 years, he has also been a boatbuilder, cabinetmaker, and machinist. Calder is the author of How to Read a Nautical Chart, Nigel Calder’s Cruising Handbook, Refrigeration for Pleasureboats, and Marine Diesel Engines. The app is $49.99 and can be found at www.itunes.com.