Richard "Jud" Henderson, who has been a sailor since the age of five, lives on Gibson Island, Maryland, where he divides his time between writing marine books (this is the nineteenth) and magazine articles and sailing his Ohlson 38, "Kelpie," His boating activities have included advisory work as a member of the American Boat and Yacht Council and as a board member of "The Telltale Compass," Henderson's previous books include "Sea Sense" and "Hand, Reef and Steer," hailed as two of the best books available on sailing and seamanship.