FVSPS Sail Course, Class 3

Sail Book, Section 3Boat Design & Hull Types

Boat Design Summary

•Fiberglass most common hull material

•Keels evolved from None to Full to Fin

•Waterline length determines max speed

•Wetted surface determines water

friction

Functions of Keel

• Reduce Leeway

• Lower Center of Gravity– Increase Stability

Keel Types

•Full keel

•Full keel with cut away fore foot

•Fin keel with spade rudder

•Fin keel with skeg rudder

•Centerboard, Daggerboard, Leeboard

Underbody Shapes

Catamaran and Trimaran

FVSPS Sail Course, Class 3

Sail Book, Section 4Standing Rigging

Standing Rigging

• What is the purpose of Standing Rigging?

• Do all Sailboats have Standing Rigging?

Standing Rigging

What are the components of Standing Rigging?

- Headstay, Jibstay, Staysail Stay

- Backstay, Running Backstays

- Shrouds

- Upper (using Spreaders)

- Lower

Compare the Rigs

How is this this different from the Turnbuckle shown on page 28?

Turnbuckle,Chainplate

FVSPS Sail Course, Class 3

Sail Book, Section 5Sails

What are the Parts of a Sail?

Corners

- Head

- Tack

- Clew

Sides

- Luff

- Leech

- Foot

How are Sails Attached at the Corners?

- Tack: Shackle to bow (headsail) or to gooseneck (mainsail)

- Head: Shackle to halyard

- Clew: Bowline to sheets (headsail) or shackle to outhaul (mainsail)

How are Sails Attached at the Sides?

- Luff: Hank onto headstay or luff tape into furler foil (headsail), or slides or boltrope go into mast track (mainsail)

- Foot: Loose (headsail), loose or attached to boom by slides or boltrope (mainsail)

- Leech: Loose

Roller Furling

Advantages?

Disadvantages?

Jib Sizes

MainsailRoach

Spinnaker

Other Sails