A groundbreaking technical analysis of yacht design based on cutting edge research in the field of aero-hydrodynamics.

A reference book for anyone wishing to understand the factors governing the performance of a sailing boat. Examined here are the fundamental factors governing a hull's behaviour, the principles underlying aero- and hydrodynamics, the performance and efficiency of aerofoils and hydrofoils, and an in-depth study of the behaviour of sails. The appendices take an in-depth look at high speed sailing and examine developments in hull appendages.A new appendix in this edition presents a simple graphic method of predicting a yacht's behaviour in a variety of wind and wave conditions which will add to our knowledge of how important such factors as sail camber, stability and the reduction of hull resistance are to a yacht's speed performance. Professor Marchaj is also the author of Sail Performance and Seaworthiness, the Forgotten Factor.

Here is a detailed study of the motive forces of a yacht written in clear and accessible terms. The author has the rare gift of enabling his readers to relate the nautical phenomena with which they are so familiar to a scientific explanation of how and why these occur. The first part covers downwind sailing, upwind sailing, sails, the hull, and the dynamic motion of a yacht. Part Two is devoted to more mathematical explanations of the same phenomena for those requiring a more scientific approach.

Principles of Yacht Design has established itself as the standard book on the subject for practising designers, naval architecture students, discerning boat owners as well as the boatbuilding industry as a whole. The fifth edition is completely revised and expanded. It examines every aspect of the process of yacht and powerboat design. The new edition includes new findings from recent research in aero and hydrodynamics, as well as covering the most recent changes to building standards. The authors have used a newly built 41-foot performance cruiser to demonstrate the practical application of yacht design theory. This new edition includes photos of the building process and detailed explanations.

Sail Performance, based on C A Marchaj's classic Sailing Theory & Practice, has established itself as the standard work on the subject and is now acclaimed as a milestone in sailing literature. From wind tunnel tests which he has conducted, Tony Marchaj describes how the factors of wind speed, sail area, sail shape, sail setting, the hull, angle of heel, wind gradient and steadiness of the wind all affect sail power, and why certain rigs are superior in power and efficiency to others. Sail Performance is a major work which is acclaimed for its analysis of the factors that contribute to an efficient sailing rig. 'Should be on the bookshelf of every serious amateur and professional sailor' Nautical Magazine

Explains the art of good sail trim with the aid of superb colour diagrams and photographs.

*This is THE book on the aero- and hydromechanics of sailing.*Contains full and scientifically justified descriptions of the dependence of the performance of sailing yachts on their configuration and the underlying physical mechanisms.*Bridges the gap between the few existing books on the aero- and hydrodynamics of sailing and the more popular books that deal with the "what and how" but not with the "why" of sailing yacht configurations and boat trim.*New edition that also covers the recently evolved technology of foiling.REVIEWS (OF THE 1ST EDITION):From the December 2015 issue of the Dutch sailing magazine "Zeilen" (translated):"Decades of research and development in fluid dynamics, but also his experience as a cruising yachtsman, have put author Joop Slooff in the position to write a new standard work on the behavior of keel yachts in wind and water. In his preface the author states that it is his ambition to bridge the gap between the few existing scientific books on the aero- and hydrodynamics of sailing and the more popular books that describe the 'what' and 'how' but not so much the 'why' of boat trim. For this purpose the author treats the basic principles of the forces acting on a sailing yacht, but he describes also how these principles translate to the boat and its sails.... In the world of sailing Slooff is known for his involvement in the development of the winged keel of the America's Cup winning yacht Australia II. His book is an excellent work for the dedicated yachtsman who is interested in the 'why' and the scientific background of the behavior of his or her boat in wind and water".Comment (Dec. 2015) by Edward Canepa, assistant professor in Fluid Machinery at the University of Genova (Italy):"For some years I'm teaching a course on "Sailing Yacht Design" in the master class of yacht design. Actually, I've found your book the best one about physics of a sailing yacht I've ever read". Comment (Dec. 2015) by Frank Woodward, former computational fluid dynamicist at the Boeing Company and Analytical Methods Inc., and a cruising yachtsman (retired):"...very impressed, no wonder it took so long. It is 'everything I ever wanted to know about sailing but was afraid to ask' !"

Modeling Ships and Space Craft: The Science and Art of Mastering the Oceans and Sky begins with the theories of Aristotle and Archimedes, moving on to examine the work of Froude and Taylor, the early aviators and the Wright Brothers, Goddard and the other rocket men, and the computational fluid dynamic models of our time. It examines the ways each used fluid dynamic principles in the design of their vessels. In the process, this book covers the history of hydrodynamic (aero and fluid) theory and its progression – with some very accessible science examples – including seminal theories. Hydrodynamic principles in action are also explored with examples from nature and the works of man. This is a book for anyone interested in the history of technology – specifically the methods and science behind the use of scale models and hydrodynamic principles in the marine and aeronautical designs of today.

A textbook that offers a unified treatment of the applications of hydrodynamics to marine problems. The applications of hydrodynamics to naval architecture and marine engineering expanded dramatically in the 1960s and 1970s. This classic textbook, originally published in 1977, filled the need for a single volume on the applications of hydrodynamics to marine problems. The book is solidly based on fundamentals, but it also guides the student to an understanding of engineering applications through its consideration of realistic configurations. The book takes a balanced approach between theory and empirics, providing the necessary theoretical background for an intelligent evaluation and application of empirical procedures. It also serves as an introduction to more specialized research methods. It unifies the seemingly diverse problems of marine hydrodynamics by examining them not as separate problems but as related applications of the general field of hydrodynamics. The book evolved from a first-year graduate course in MIT's Department of Ocean Engineering. A knowledge of advanced calculus is assumed. Students will find a previous introductory course in fluid dynamics helpful, but the book presents the necessary fundamentals in a self-contained manner. The 40th anniversary of this pioneering book offers a foreword by John Grue. Contents Model Testing • The Motion of a Viscous Fluid • The Motion of an Ideal Fluid • Lifting Surfaces • Waves and Wave Effects • Hydrodynamics of Slender Bodies