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Islander 36 Fleet San Francisco Bay Sail Shaping for Performance Sailors Sail Trim Lecture Module #3.

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Presentation on theme: "Islander 36 Fleet San Francisco Bay Sail Shaping for Performance Sailors Sail Trim Lecture Module #3."— Presentation transcript:

1 Islander 36 Fleet San Francisco Bay Sail Shaping for Performance Sailors Sail Trim Lecture Module #3

2 Sail Shaping for Performance Sailors Third Module Trim Loops Helm/Sail Feedback Spinnaker Shaping

3 J24 Parallel Leeches

4 Islander 36 Parallel Leeches

5 Sail Shaping for Performance Sailors Third Module Trim Loops Helm/Sail Feedback Spinnaker Shaping

6 Trim Loops Telltales Jib Trim – Distance From Spreaders Traveler Control Use Backstay Control Use Knot Meter Crew Feedback Two Boat Tuning Velocity Prediction Programs – VPP & Polar Diagrams Performance Prediction Programs – Target Boat Speeds

7 Telltales - Point Mode

8 I36 Polar Diagram - VPP

9 I36 Performance Prediction

10 Trim Loops – Instrument Use AWA = Apparent Wind Angle AWS = Apparent Wind Speed TWA = True Wind Angle TWS = True Wind Speed S = Boat Speed in Knots (Fun Meter!) VMG = Velocity Made Good

11 Sail Shaping for Performance Sailors Third Module Trim Loops Helm/Sail Feedback Spinnaker Shaping

12 Helm/Sail Feedback Slight Weather Helm Set-up Perfectly Balanced Helm - Fast Upwind Puff Cards - Heel and Induced Weather Helm

13 IAC Sail Trim - Telltales

14 IAC Genoa Trim & Draft Stripes

15 Sail Shaping for Performance Sailors Third Module Trim Loops Helm/Sail Feedback Spinnaker Shaping

16 Symmetrical Spinnakers Generational Designs & Specialty Designs Trim Fundamentals Special Circumstance Trim Requirements

17 General Spinnaker Designs

18 1970’s Islander 36 Radial Head Symmetrical Spinnaker

19 I36 Tri-Radial Symmetrical Spinnaker

20 Islander 36 Genniker/Cruising Spinnaker

21 Symmetrical Spinnaker Trim Fundamentals Hoist Trim Gybing Douse Control

22 One Ton Cup Hoist – “Ringing the Bell”

23 J24 Spinnaker Hoist

24 J24 2002 NAs Hoisting Deeper Angle When it’s Blowing

25 Spinnaker Trim

26 Wind Tunnel Demonstrating Flow

27 J24 Spinnaker Leech Curves

28 Islander 36 Spinnaker Trim

29 Farr 40 Worlds SF Symmetrical Spinnaker Trim

30 IAC LVC Finals – Symmetrical

31 Islander 36 Reaching Trim

32 IAC Symmetrical Running

33 IAC Oracle BMW Leeward Takedown

34 Special Circumstances IAC Alinghi Spinnaker Set

35 J24 2005 Nationals 30 Knot Squall

36 J24 2005 Nationals 37 Knot Squall

37 Wing-on-Wing “The Other Option”

38 The “Other Option” Continued

39 Sail Shaping for Performance Sailors Third Module Trim Loops Helm/Sail Feedback Spinnaker Shaping

40 5 Key Factors for Success 1. Trim Spinnaker with Constant 3 “ to 6” Curl 2. Square the Pole Visually By Vertical Luff and Vertical Center Seam 3. Keep Windward Clew (the tack) Slightly Lower 4. Luff Breaking Too High – Pole Up, Breaking Too Low - Pole Down 5. Always Remember to Have Fun!

41 I36 Fleet Racing SF Bay “The Chess Game”

42 Sail Shaping for Performance Sailors Final Q&A Trim Loops Helm/Sail Feedback Spinnaker Shaping

43 Time to go Sailing!


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