Dave Gerr

Dave Gerr is the director of the Westlawn Institute of Marine Technology--the only accredited distance-learning school of small-craft design in the United States--and since 1983 the principal of Gerr Marine, Inc., a designer of yachts and commercial vessels. A fellow of the Royal Institution of Naval Architects, he is the author of "Propeller Handbook," "The Elements of Boat Strength," and "The Nature of Boats," all from International Marine/McGraw-Hill.