FVSPS Sail Course, Class 5

What Are We Doing Today? In Class Today: - 10:00 OTW Today Briefing (Brian) - 10:10 Last Week’s OTW, Discuss (Brian) - 10:20 Questions/Clarification, Sec. 7, 8, 12 (Leslie) - 10:50 Section 9, “Wind” (Brian) - 11:10 Section 10, “Sail Shape” (Brian) - 11:40 Section 11, “Preparing to Sail” (Leslie) - 11:55 OTW Assignment (Brian) - 12:00 Lunch, then OTW

OTW Today Briefing

Available On-Boat Additional Training 1. Going aloft 2. Folding Sails on Side Deck 3. Hanking on Headsail 4. Changing Headsail on a Roller Furler

Prior OTW, Discuss 1. What did you learn? 2. What went right? 3. What went wrong?

Questions/Clarifications Sections 7, 8, 12

FVSPS Sail Course Wind Sail Book, Section 9

Section 9, Wind, Overview Two Separate Topics: - Weather (pp. 69-72) - Analysis of Wind and Boat Movement (pp. 72-79)

Weather - Recommendation: Take USPS Weather Course - Sea Breeze, Land Breeze (pp. 69-72) - Beaufort Wind Scale (p. 71)

Analysis of Wind and Boat Movement - True Wind - Boat Wind - Apparent Wind

True vs. Apparent Wind - Simple Situations: Directions of True Wind and Apparent Wind Parallel - Not Parallel Situations: Analyze with Trigonometry, Diagrams - Sail Book, pp. 74-75

True vs. Apparent Wind: Some Implications - Why a Beam Reach takes us Downwind (Fig. 9-9/10, p. 75) - Why When We Tack we Tack Further than we Expect (Fig. 9-8, p. 74)

Apparent Wind: Decompose into Forward and Sideways Components - Use Triangle Diagrams (Fig. 9-12, p. 76) - Why Boats heel most on a Close Haul (p. 77) - Implications for Sail Trim (Fig. 9-15, p. 78)

Sail Trim: Goal, Rules of Thumb - Want to Keep Sail at Same Angle of Attack when in Pull Mode (Fig. 9-15, p. 78; Fig. 10-3, p. 84) - “When in doubt, let it out” (Summary, p. 79, end)

FVSPS Sail Course Sail Shape Sail Book, Section 10

Sail Shape, Basic Concepts Angle of Attack Laminar Flow over Sail Using Telltales to Assess Angle of Attack, Whether Air Flow is Laminar

Sail Shape, Major Adjustments Angle of Attack: Sheets/Helm Adjustment Draft: mainsail outhaul, sheets, halyards, cunningham Basic Rule: Flatten Sail to De-Power (in Pull Mode)

Sail Shape, Twist Adjustments Headsail: Placement of Genoa Car Mainsail: Boomvang, Traveller, Sheet

Sail Shape: Understanding Twist Wind Gradient Effect of Stronger True Wind on Apparent Wind Need for Sail Twist to Keep Same Angle of Attack

Understanding Twist: Sail Book Errors P. 86, par. 16 P. 86, par. 17

FVSPS Sail Course Preparing to Sail Sail Book, Section 11

Stepping the Mast

Preparing to Sail Check the weather. Reefing? Headsail choice? Have the proper clothing, footwear. Bring any needed food and water.

Crew Activities, Departing Remove canvas, instrument covers. Hank-on headsail. Tie/run jib sheets. Run main sheet. Attach halyards. Untie dock lines. Stow fenders. Close life-line gate.

Sailing Activities Hoist mainsail. Hoist/unfurl headsail. SAIL! Deploy lazy jacks. Drop/furl headsail. Drop/flake mainsail.

Crew Activities, Returning Open life-line gate. Deploy fenders. Positioned to step quickly off onto dock. Tie Boat to the dock (Basic Keelboat, p. 49). Fold/bag headsail. Remove/coil jib sheets. Flake mainsail, stow lazy jacks. Stow main sheet. Position canvas, instrument covers.

OTW Assignment for Today

Available On-Boat Additional Training 1. Going aloft 2. Folding Sails on Side Deck 3. Hanking on Headsail 4. Changing Headsail on a Roller Furler