FVSPS Sail Course Class 5 What Are We

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. 7279)

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 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