Search preferences
Direkt zu den wichtigsten Suchergebnissen

Suchfilter

Produktart

  • Alle Product Types 
  • Bücher (17)
  • Magazine & Zeitschriften (Keine weiteren Ergebnisse entsprechen dieser Verfeinerung)
  • Comics (Keine weiteren Ergebnisse entsprechen dieser Verfeinerung)
  • Noten (Keine weiteren Ergebnisse entsprechen dieser Verfeinerung)
  • Kunst, Grafik & Poster (Keine weiteren Ergebnisse entsprechen dieser Verfeinerung)
  • Fotografien (Keine weiteren Ergebnisse entsprechen dieser Verfeinerung)
  • Karten (Keine weiteren Ergebnisse entsprechen dieser Verfeinerung)
  • Manuskripte & Papierantiquitäten (Keine weiteren Ergebnisse entsprechen dieser Verfeinerung)

Zustand Mehr dazu

Weitere Eigenschaften

  • Erstausgabe (Keine weiteren Ergebnisse entsprechen dieser Verfeinerung)
  • Signiert (Keine weiteren Ergebnisse entsprechen dieser Verfeinerung)
  • Schutzumschlag (Keine weiteren Ergebnisse entsprechen dieser Verfeinerung)
  • Angebotsfoto (10)
  • Keine Print-on-Demand Angebote (17)

Sprache (1)

Preis

Benutzerdefinierte Preisspanne (EUR)

Land des Verkäufers

  • Whidden North Sails, Tom; Levitt, Michael

    Sprache: Englisch

    Verlag: Seapoint Books, 2016

    ISBN 10: 0997392002 ISBN 13: 9780997392005

    Anbieter: Bay State Book Company, North Smithfield, RI, USA

    Verkäuferbewertung 5 von 5 Sternen 5 Sterne, Erfahren Sie mehr über Verkäufer-Bewertungen

    Verkäufer kontaktieren

    EUR 26,42

    Versand gratis
    Versand innerhalb von USA

    Anzahl: 1 verfügbar

    In den Warenkorb

    Zustand: good. The book is in good condition with all pages and cover intact, including the dust jacket if originally issued. The spine may show light wear. Pages may contain some notes or highlighting, and there might be a "From the library of" label. Boxed set packaging, shrink wrap, or included media like CDs may be missing.

  • Whidden, Tom; Levitt, Michael

    Sprache: Englisch

    Verlag: Seapoint Books, 2016

    ISBN 10: 0997392002 ISBN 13: 9780997392005

    Anbieter: GreatBookPrices, Columbia, MD, USA

    Verkäuferbewertung 5 von 5 Sternen 5 Sterne, Erfahren Sie mehr über Verkäufer-Bewertungen

    Verkäufer kontaktieren

    EUR 24,83

    EUR 2,22 Versand
    Versand innerhalb von USA

    Anzahl: 15 verfügbar

    In den Warenkorb

    Zustand: As New. Unread book in perfect condition.

  • LEVITT/WHIDDEN

    Sprache: Englisch

    Verlag: Simon and Schuster, 2016

    ISBN 10: 0997392002 ISBN 13: 9780997392005

    Anbieter: INDOO, Avenel, NJ, USA

    Verkäuferbewertung 5 von 5 Sternen 5 Sterne, Erfahren Sie mehr über Verkäufer-Bewertungen

    Verkäufer kontaktieren

    EUR 27,13

    Versand gratis
    Versand innerhalb von USA

    Anzahl: 10 verfügbar

    In den Warenkorb

    Zustand: As New. Unread copy in mint condition.

  • Whidden, Tom; Levitt, Michael

    Sprache: Englisch

    Verlag: Seapoint Books, 2016

    ISBN 10: 0997392002 ISBN 13: 9780997392005

    Anbieter: GreatBookPrices, Columbia, MD, USA

    Verkäuferbewertung 5 von 5 Sternen 5 Sterne, Erfahren Sie mehr über Verkäufer-Bewertungen

    Verkäufer kontaktieren

    EUR 24,92

    EUR 2,22 Versand
    Versand innerhalb von USA

    Anzahl: 15 verfügbar

    In den Warenkorb

    Zustand: New.

  • LEVITT/WHIDDEN

    Sprache: Englisch

    Verlag: Simon and Schuster, 2016

    ISBN 10: 0997392002 ISBN 13: 9780997392005

    Anbieter: INDOO, Avenel, NJ, USA

    Verkäuferbewertung 5 von 5 Sternen 5 Sterne, Erfahren Sie mehr über Verkäufer-Bewertungen

    Verkäufer kontaktieren

    EUR 27,22

    Versand gratis
    Versand innerhalb von USA

    Anzahl: 10 verfügbar

    In den Warenkorb

    Zustand: New. Brand New.

  • Tom Whidden

    Sprache: Englisch

    Verlag: Seapoint Books, Sydney, NSW, 2016

    ISBN 10: 0997392002 ISBN 13: 9780997392005

    Anbieter: Grand Eagle Retail, Bensenville, IL, USA

    Verkäuferbewertung 5 von 5 Sternen 5 Sterne, Erfahren Sie mehr über Verkäufer-Bewertungen

    Verkäufer kontaktieren

    EUR 31,65

    Versand gratis
    Versand innerhalb von USA

    Anzahl: 1 verfügbar

    In den Warenkorb

    Hardcover. Zustand: new. Hardcover. This is not your parents' Art and Science of Sails, written by Tom Whidden and Michael Levitt and published in 1990 by St. Martin's Press. The first edition sold more than 20,000 copies. The Second Revised Edition 2016 is published by North Sails Group, LLC and written by the same duo. What a difference 25 years makes! Today there are one-piece sails made over a 3D mold in the shape they will assume in the wind. Sail plans have radically evolved to fractional rigs, fat-head mains, and non-overlapping jibs. That is true for racing boats as well as cruising. Thus, ninety percent of the text is new, as are almost all of the more than 100 photographs and technical illustrations. The authors focus on circulation as they did in the first edition, but now come at it from a different direction. And for the first time anywhere, they attempt to quantify its effects. Where the wind speeds up and why as it passes over a sail plan, and where it slows down and why. Circulation theory is familiar to aerodynamicists for at least 100 years and is argued about by sailors at least since 1973, when the late Arvel Gentry loosed his theories on the sailing world. Gentry was an aerodynamicist at Boeing by day and a sailor on the weekends. And the theories used to explain why airplanes fly were at odds with the theories of why sailboats sail to weather and what the slot actually does. Whidden and Levitt utilize explanations like circulation to answer such diverse questions as: * Why fractional rigs, fat-head mains, and non-overlapping jibs have come to predominate. * Why and how leech twist can be a sail-trimmer's best friend. * Why a yacht designer positions the mast, keel, and rudder to create some weather helm. * Why the safe-leeward position is advantageous relative to the entire fleet, not just to the boat you tacked beneath and forward of. * Why a mainsail's efficiency is improved with added upper roach, beyond the value of the extra area. * Why the miracle of upwind sailing is not that there is so much lift but so little drag. * Why, when sailing upwind, the main is always trimmed to a tighter angle than the jib. * What a polar diagram tells us or why tacking downwind is almost always faster than sailing directly to a mark. There is also an in-depth look at the wonders of material utilization-not just materials. Indeed there have been no new fibers accepted into sailmaking for over 20 years. It is how they are used that makes the difference. In the last three chapters, the authors drill down on mainsails, headsails, and downwind asymmetric or symmetric spinnakers. And in this edition for the first time they address downwind aerodynamics. The book celebrates the complexity and beauty of sails and of the whole rarefied sport of sailing. A bible of modern sail handling and selection. It is presented in an oversize format along with four/color photographs. Shipping may be from multiple locations in the US or from the UK, depending on stock availability.

  • Tom Whidden, Michael Levitt

    Sprache: Englisch

    Verlag: Seapoint Books and Media LLC, US, 2016

    ISBN 10: 0997392002 ISBN 13: 9780997392005

    Anbieter: Rarewaves USA, OSWEGO, IL, USA

    Verkäuferbewertung 5 von 5 Sternen 5 Sterne, Erfahren Sie mehr über Verkäufer-Bewertungen

    Verkäufer kontaktieren

    EUR 36,91

    Versand gratis
    Versand innerhalb von USA

    Anzahl: 8 verfügbar

    In den Warenkorb

    Hardback. Zustand: New. This is not your parents' Art and Science of Sails, written by Tom Whidden and Michael Levitt and published in 1990 by St. Martin's Press. The first edition sold more than 20,000 copies. The Second Revised Edition 2016 -- now in its second printing -- is published by North Sails Group, LLC and written by the same duo. What a difference 25 years makes! Today there are one-piece sails made over a 3D mold in the shape they will assume in the wind. Sail plans have radically evolved to fractional rigs, fat-head mains, and non-overlapping jibs. That is true for racing boats as well as cruising. Thus, ninety percent of the text is new, as are almost all of the more than 100 photographs and technical illustrations. The authors focus on circulation as they did in the first edition, but now come at it from a different direction. And for the first time anywhere, they attempt to quantify its effects. Where the wind speeds up and why as it passes over a sail plan, and where it slows down and why. Circulation theory is familiar to aerodynamicists for at least 100 years and is argued about by sailors at least since 1973, when the late Arvel Gentry loosed his theories on the sailing world.Gentry was an aerodynamicist at Boeing by day and a sailor on the weekends. And the theories used to explain why airplanes fly were at odds with the theories of why sailboats sail to weather and what the slot actually does. Whidden, CEO of North Marine Group, which includes North Sails, and Levitt, who has written 14 books, utilize explanations like circulation to answer such diverse questions as: Why fractional rigs, fat-head mains, and non-overlapping jibs have come to predominate. Why and how leech twist can be a sail-trimmer's best friend. Why a yacht designer positions the mast, keel, and rudder to create some weather helm. Why the safe-leeward position is advantageous relative to the entire fleet, not just to the boat you tacked beneath and forward of. Why a mainsail's efficiency is improved with added upper roach, beyond the value of the extra area. Why the miracle of upwind sailing is not that there is so much lift but so little drag. Why, when sailing upwind, the main is always trimmed to a tighter angle than the jib. What a polar diagram tells us or why tacking downwind is almost always faster than sailing directly to a mark.There is also an in-depth look at the wonders of material utilizationnot just materials. Indeed there have been no new fibers accepted into sailmaking for over 20 years. It is how they are used that makes the difference. In the last three chapters, the authors drill down on mainsails, headsails, and downwind asymmetric and symmetric spinnakers. And in this edition for the first time they address downwind aerodynamics. The book celebrates the complexity and beauty of sails in words and pictures and of the whole rarefied sport of sailing.

  • Tom Whidden, Michael Levitt

    Sprache: Englisch

    Verlag: Seapoint Books and Media LLC, US, 2016

    ISBN 10: 0997392002 ISBN 13: 9780997392005

    Anbieter: Rarewaves.com USA, London, LONDO, Vereinigtes Königreich

    Verkäuferbewertung 5 von 5 Sternen 5 Sterne, Erfahren Sie mehr über Verkäufer-Bewertungen

    Verkäufer kontaktieren

    EUR 43,61

    Versand gratis
    Versand von Vereinigtes Königreich nach USA

    Anzahl: 8 verfügbar

    In den Warenkorb

    Hardback. Zustand: New. This is not your parents' Art and Science of Sails, written by Tom Whidden and Michael Levitt and published in 1990 by St. Martin's Press. The first edition sold more than 20,000 copies. The Second Revised Edition 2016 -- now in its second printing -- is published by North Sails Group, LLC and written by the same duo. What a difference 25 years makes! Today there are one-piece sails made over a 3D mold in the shape they will assume in the wind. Sail plans have radically evolved to fractional rigs, fat-head mains, and non-overlapping jibs. That is true for racing boats as well as cruising. Thus, ninety percent of the text is new, as are almost all of the more than 100 photographs and technical illustrations. The authors focus on circulation as they did in the first edition, but now come at it from a different direction. And for the first time anywhere, they attempt to quantify its effects. Where the wind speeds up and why as it passes over a sail plan, and where it slows down and why. Circulation theory is familiar to aerodynamicists for at least 100 years and is argued about by sailors at least since 1973, when the late Arvel Gentry loosed his theories on the sailing world.Gentry was an aerodynamicist at Boeing by day and a sailor on the weekends. And the theories used to explain why airplanes fly were at odds with the theories of why sailboats sail to weather and what the slot actually does. Whidden, CEO of North Marine Group, which includes North Sails, and Levitt, who has written 14 books, utilize explanations like circulation to answer such diverse questions as: Why fractional rigs, fat-head mains, and non-overlapping jibs have come to predominate. Why and how leech twist can be a sail-trimmer's best friend. Why a yacht designer positions the mast, keel, and rudder to create some weather helm. Why the safe-leeward position is advantageous relative to the entire fleet, not just to the boat you tacked beneath and forward of. Why a mainsail's efficiency is improved with added upper roach, beyond the value of the extra area. Why the miracle of upwind sailing is not that there is so much lift but so little drag. Why, when sailing upwind, the main is always trimmed to a tighter angle than the jib. What a polar diagram tells us or why tacking downwind is almost always faster than sailing directly to a mark.There is also an in-depth look at the wonders of material utilizationnot just materials. Indeed there have been no new fibers accepted into sailmaking for over 20 years. It is how they are used that makes the difference. In the last three chapters, the authors drill down on mainsails, headsails, and downwind asymmetric and symmetric spinnakers. And in this edition for the first time they address downwind aerodynamics. The book celebrates the complexity and beauty of sails in words and pictures and of the whole rarefied sport of sailing.

  • Tom Whidden

    Sprache: Englisch

    Verlag: Seapoint Books, 2016

    ISBN 10: 0997392002 ISBN 13: 9780997392005

    Anbieter: Kennys Bookshop and Art Galleries Ltd., Galway, GY, Irland

    Verkäuferbewertung 5 von 5 Sternen 5 Sterne, Erfahren Sie mehr über Verkäufer-Bewertungen

    Verkäufer kontaktieren

    EUR 40,32

    EUR 10,50 Versand
    Versand von Irland nach USA

    Anzahl: 15 verfügbar

    In den Warenkorb

    Zustand: New. A bible of modern sail handling and selection. It is presented in an oversize format along with four/color photographs. Num Pages: 182 pages, 15 colour illustrations, 200 colour illustrations. BIC Classification: WSD; WSSN3. Category: (G) General (US: Trade). Dimension: 224 x 284 x 2. Weight in Grams: 68. . 2016. 2nd Edition. Hardcover. . . . .

  • Michael Levitt

    Sprache: Englisch

    Verlag: Seapoint Books, 2016

    ISBN 10: 0997392002 ISBN 13: 9780997392005

    Anbieter: WorldofBooks, Goring-By-Sea, WS, Vereinigtes Königreich

    Verkäuferbewertung 5 von 5 Sternen 5 Sterne, Erfahren Sie mehr über Verkäufer-Bewertungen

    Verkäufer kontaktieren

    EUR 48,20

    EUR 6,42 Versand
    Versand von Vereinigtes Königreich nach USA

    Anzahl: 1 verfügbar

    In den Warenkorb

    Paperback. Zustand: Fine.

  • Tom Whidden

    Sprache: Englisch

    Verlag: Seapoint Books, 2016

    ISBN 10: 0997392002 ISBN 13: 9780997392005

    Anbieter: Kennys Bookstore, Olney, MD, USA

    Verkäuferbewertung 4 von 5 Sternen 4 Sterne, Erfahren Sie mehr über Verkäufer-Bewertungen

    Verkäufer kontaktieren

    EUR 49,40

    EUR 8,84 Versand
    Versand innerhalb von USA

    Anzahl: 15 verfügbar

    In den Warenkorb

    Zustand: New. A bible of modern sail handling and selection. It is presented in an oversize format along with four/color photographs. Num Pages: 182 pages, 15 colour illustrations, 200 colour illustrations. BIC Classification: WSD; WSSN3. Category: (G) General (US: Trade). Dimension: 224 x 284 x 2. Weight in Grams: 68. . 2016. 2nd Edition. Hardcover. . . . . Books ship from the US and Ireland.

  • Whidden, Tom/ Levitt, Michael

    Sprache: Englisch

    Verlag: Seapoint Books, 2016

    ISBN 10: 0997392002 ISBN 13: 9780997392005

    Anbieter: Revaluation Books, Exeter, Vereinigtes Königreich

    Verkäuferbewertung 5 von 5 Sternen 5 Sterne, Erfahren Sie mehr über Verkäufer-Bewertungen

    Verkäufer kontaktieren

    EUR 62,14

    EUR 17,21 Versand
    Versand von Vereinigtes Königreich nach USA

    Anzahl: 1 verfügbar

    In den Warenkorb

    Hardcover. Zustand: Brand New. 2nd edition. 182 pages. 11.25x9.25x1.00 inches. In Stock.

  • Tom Whidden, Michael Levitt

    Sprache: Englisch

    Verlag: Seapoint Books and Media LLC, US, 2016

    ISBN 10: 0997392002 ISBN 13: 9780997392005

    Anbieter: Rarewaves USA United, OSWEGO, IL, USA

    Verkäuferbewertung 5 von 5 Sternen 5 Sterne, Erfahren Sie mehr über Verkäufer-Bewertungen

    Verkäufer kontaktieren

    EUR 42,95

    EUR 42,10 Versand
    Versand innerhalb von USA

    Anzahl: 8 verfügbar

    In den Warenkorb

    Hardback. Zustand: New. This is not your parents' Art and Science of Sails, written by Tom Whidden and Michael Levitt and published in 1990 by St. Martin's Press. The first edition sold more than 20,000 copies. The Second Revised Edition 2016 -- now in its second printing -- is published by North Sails Group, LLC and written by the same duo. What a difference 25 years makes! Today there are one-piece sails made over a 3D mold in the shape they will assume in the wind. Sail plans have radically evolved to fractional rigs, fat-head mains, and non-overlapping jibs. That is true for racing boats as well as cruising. Thus, ninety percent of the text is new, as are almost all of the more than 100 photographs and technical illustrations. The authors focus on circulation as they did in the first edition, but now come at it from a different direction. And for the first time anywhere, they attempt to quantify its effects. Where the wind speeds up and why as it passes over a sail plan, and where it slows down and why. Circulation theory is familiar to aerodynamicists for at least 100 years and is argued about by sailors at least since 1973, when the late Arvel Gentry loosed his theories on the sailing world.Gentry was an aerodynamicist at Boeing by day and a sailor on the weekends. And the theories used to explain why airplanes fly were at odds with the theories of why sailboats sail to weather and what the slot actually does. Whidden, CEO of North Marine Group, which includes North Sails, and Levitt, who has written 14 books, utilize explanations like circulation to answer such diverse questions as: Why fractional rigs, fat-head mains, and non-overlapping jibs have come to predominate. Why and how leech twist can be a sail-trimmer's best friend. Why a yacht designer positions the mast, keel, and rudder to create some weather helm. Why the safe-leeward position is advantageous relative to the entire fleet, not just to the boat you tacked beneath and forward of. Why a mainsail's efficiency is improved with added upper roach, beyond the value of the extra area. Why the miracle of upwind sailing is not that there is so much lift but so little drag. Why, when sailing upwind, the main is always trimmed to a tighter angle than the jib. What a polar diagram tells us or why tacking downwind is almost always faster than sailing directly to a mark.There is also an in-depth look at the wonders of material utilizationnot just materials. Indeed there have been no new fibers accepted into sailmaking for over 20 years. It is how they are used that makes the difference. In the last three chapters, the authors drill down on mainsails, headsails, and downwind asymmetric and symmetric spinnakers. And in this edition for the first time they address downwind aerodynamics. The book celebrates the complexity and beauty of sails in words and pictures and of the whole rarefied sport of sailing.

  • Whidden, Tom|Levitt, Michael

    Sprache: Englisch

    Verlag: SEAPOINT BOOKS, 2016

    ISBN 10: 0997392002 ISBN 13: 9780997392005

    Anbieter: moluna, Greven, Deutschland

    Verkäuferbewertung 4 von 5 Sternen 4 Sterne, Erfahren Sie mehr über Verkäufer-Bewertungen

    Verkäufer kontaktieren

    EUR 39,48

    EUR 48,99 Versand
    Versand von Deutschland nach USA

    Anzahl: Mehr als 20 verfügbar

    In den Warenkorb

    Zustand: New. A bible of modern sail handling and selection. It is presented in an oversize format along with four/color photographs.InhaltsverzeichnisIntroduction.

  • Tom Whidden

    Sprache: Englisch

    Verlag: NewSouth Publishing, 2016

    ISBN 10: 0997392002 ISBN 13: 9780997392005

    Anbieter: THE SAINT BOOKSTORE, Southport, Vereinigtes Königreich

    Verkäuferbewertung 5 von 5 Sternen 5 Sterne, Erfahren Sie mehr über Verkäufer-Bewertungen

    Verkäufer kontaktieren

    EUR 66,95

    EUR 24,84 Versand
    Versand von Vereinigtes Königreich nach USA

    Anzahl: 15 verfügbar

    In den Warenkorb

    Hardback. Zustand: New. New copy - Usually dispatched within 7-11 working days.

  • Tom Whidden

    Sprache: Englisch

    Verlag: Seapoint Books, Sydney, NSW, 2016

    ISBN 10: 0997392002 ISBN 13: 9780997392005

    Anbieter: AussieBookSeller, Truganina, VIC, Australien

    Verkäuferbewertung 5 von 5 Sternen 5 Sterne, Erfahren Sie mehr über Verkäufer-Bewertungen

    Verkäufer kontaktieren

    EUR 83,04

    EUR 31,16 Versand
    Versand von Australien nach USA

    Anzahl: 1 verfügbar

    In den Warenkorb

    Hardcover. Zustand: new. Hardcover. This is not your parents' Art and Science of Sails, written by Tom Whidden and Michael Levitt and published in 1990 by St. Martin's Press. The first edition sold more than 20,000 copies. The Second Revised Edition 2016 is published by North Sails Group, LLC and written by the same duo. What a difference 25 years makes! Today there are one-piece sails made over a 3D mold in the shape they will assume in the wind. Sail plans have radically evolved to fractional rigs, fat-head mains, and non-overlapping jibs. That is true for racing boats as well as cruising. Thus, ninety percent of the text is new, as are almost all of the more than 100 photographs and technical illustrations. The authors focus on circulation as they did in the first edition, but now come at it from a different direction. And for the first time anywhere, they attempt to quantify its effects. Where the wind speeds up and why as it passes over a sail plan, and where it slows down and why. Circulation theory is familiar to aerodynamicists for at least 100 years and is argued about by sailors at least since 1973, when the late Arvel Gentry loosed his theories on the sailing world. Gentry was an aerodynamicist at Boeing by day and a sailor on the weekends. And the theories used to explain why airplanes fly were at odds with the theories of why sailboats sail to weather and what the slot actually does. Whidden and Levitt utilize explanations like circulation to answer such diverse questions as: * Why fractional rigs, fat-head mains, and non-overlapping jibs have come to predominate. * Why and how leech twist can be a sail-trimmer's best friend. * Why a yacht designer positions the mast, keel, and rudder to create some weather helm. * Why the safe-leeward position is advantageous relative to the entire fleet, not just to the boat you tacked beneath and forward of. * Why a mainsail's efficiency is improved with added upper roach, beyond the value of the extra area. * Why the miracle of upwind sailing is not that there is so much lift but so little drag. * Why, when sailing upwind, the main is always trimmed to a tighter angle than the jib. * What a polar diagram tells us or why tacking downwind is almost always faster than sailing directly to a mark. There is also an in-depth look at the wonders of material utilization-not just materials. Indeed there have been no new fibers accepted into sailmaking for over 20 years. It is how they are used that makes the difference. In the last three chapters, the authors drill down on mainsails, headsails, and downwind asymmetric or symmetric spinnakers. And in this edition for the first time they address downwind aerodynamics. The book celebrates the complexity and beauty of sails and of the whole rarefied sport of sailing. A bible of modern sail handling and selection. It is presented in an oversize format along with four/color photographs. Shipping may be from our Sydney, NSW warehouse or from our UK or US warehouse, depending on stock availability.

  • Tom Whidden, Michael Levitt

    Sprache: Englisch

    Verlag: Seapoint Books and Media LLC, US, 2016

    ISBN 10: 0997392002 ISBN 13: 9780997392005

    Anbieter: Rarewaves.com UK, London, Vereinigtes Königreich

    Verkäuferbewertung 5 von 5 Sternen 5 Sterne, Erfahren Sie mehr über Verkäufer-Bewertungen

    Verkäufer kontaktieren

    EUR 42,98

    EUR 74,57 Versand
    Versand von Vereinigtes Königreich nach USA

    Anzahl: 8 verfügbar

    In den Warenkorb

    Hardback. Zustand: New. This is not your parents' Art and Science of Sails, written by Tom Whidden and Michael Levitt and published in 1990 by St. Martin's Press. The first edition sold more than 20,000 copies. The Second Revised Edition 2016 -- now in its second printing -- is published by North Sails Group, LLC and written by the same duo. What a difference 25 years makes! Today there are one-piece sails made over a 3D mold in the shape they will assume in the wind. Sail plans have radically evolved to fractional rigs, fat-head mains, and non-overlapping jibs. That is true for racing boats as well as cruising. Thus, ninety percent of the text is new, as are almost all of the more than 100 photographs and technical illustrations. The authors focus on circulation as they did in the first edition, but now come at it from a different direction. And for the first time anywhere, they attempt to quantify its effects. Where the wind speeds up and why as it passes over a sail plan, and where it slows down and why. Circulation theory is familiar to aerodynamicists for at least 100 years and is argued about by sailors at least since 1973, when the late Arvel Gentry loosed his theories on the sailing world.Gentry was an aerodynamicist at Boeing by day and a sailor on the weekends. And the theories used to explain why airplanes fly were at odds with the theories of why sailboats sail to weather and what the slot actually does. Whidden, CEO of North Marine Group, which includes North Sails, and Levitt, who has written 14 books, utilize explanations like circulation to answer such diverse questions as: Why fractional rigs, fat-head mains, and non-overlapping jibs have come to predominate. Why and how leech twist can be a sail-trimmer's best friend. Why a yacht designer positions the mast, keel, and rudder to create some weather helm. Why the safe-leeward position is advantageous relative to the entire fleet, not just to the boat you tacked beneath and forward of. Why a mainsail's efficiency is improved with added upper roach, beyond the value of the extra area. Why the miracle of upwind sailing is not that there is so much lift but so little drag. Why, when sailing upwind, the main is always trimmed to a tighter angle than the jib. What a polar diagram tells us or why tacking downwind is almost always faster than sailing directly to a mark.There is also an in-depth look at the wonders of material utilizationnot just materials. Indeed there have been no new fibers accepted into sailmaking for over 20 years. It is how they are used that makes the difference. In the last three chapters, the authors drill down on mainsails, headsails, and downwind asymmetric and symmetric spinnakers. And in this edition for the first time they address downwind aerodynamics. The book celebrates the complexity and beauty of sails in words and pictures and of the whole rarefied sport of sailing.