1. Cruising Sails / Appropriate Technology Quantum Sail Design

2. Balancing The Equation l Performance l Durability l Dollars

3. Three Types of Construction l Cross Cut (Woven Dacron) l Tri Radial or “Oriented” (Polyester or Pentex Composites) l Tri Radial With High Modulus Fibers (Vectran, Spectra, etc.)

4. What Do You Gain? l SHAPE l Shape Life l Durability?

5. Cross Cut Sails l Woven Polyester (Dacron) l The Quality Issue in Woven Materials l Type of Yarns l Number of Yarns per inch l Finish n Downsides to Dacron

6. Tri Radial (Fiber Oriented) Sails l Threadline / Loadline Alignment l Composites versus Wovens l Downside Risks / Mold and Mildew

7. How Do They Know?

8. Sail Loadings

9. Stress Flow

10. Oriented = Composite Materials l Exterior skins of woven polyester l Pre Tensioned Scrim l Mylar Film

11. How Much Stronger? How Much Better Shape? l Dacron l Polyester Composites l Pentex Composites l High Modulus (Spectra or Vectran)

12. Shape Change Dacron Versus Design

13. Shape Change Polyester Composites Versus Design

14. Shape Change Vectran Composites Versus Design