Did you know that a boat: Roughly doubles in price for every 5ft increase in length? Has a maximum displacement speed of 1.4Vsailing length? Costs very approximately three times the price of the materials used to make her? Will need an engines with at least 4 horsepower per ton to drive her successfully? This book is for novice designers who want to use pencil and paper or computer aided design. Most of the maths has been replaced by simple rules of thumb. It will be equally useful to boat owners who want to modify the hull, rig, deck layout or accommodation. It will be invaluable to boat buyers who want to answer questions like: How will she sail? How much will she costs? How easy is it to change things? How can I reduce or increase sail area without upsetting the balance?Nicolson, Ian is the author of 'Understanding Yacht Design ', published 2002 under ISBN 9781898660828 and ISBN 1898660824.