<p>Here is the definitive manual for choosing, purchasing, installing, maintaining, repairing, using, and even building a windvane self-steerer, that amazing device that relieves longdistance sailors from the the helm while using not one amp of precious electrical power. This user-friendly guide includes:</p><ul><li>How vane gears work <li>A clear discussion of how to match vane design with boat <li>Invaluable instructions for how to sail with a windvane-- settings, sail trim, and more <li>A detailed look at nine commercial models, plus plans and instructions for readers to build their own </ul>