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Islander 36 Fleet San Francisco Bay. Sail Shaping for Performance Sailors Sail Trim Lecture Module #3. Sail Shaping for Performance Sailors Third Module. Trim Loops Helm/Sail Feedback Spinnaker Shaping. J24 Parallel Leeches. Islander 36 Parallel Leeches.

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Islander 36 fleet san francisco bay

Islander 36 FleetSan Francisco Bay

Sail Shaping for Performance Sailors Sail Trim Lecture

Module #3


Sail shaping for performance sailors third module
Sail Shaping for Performance SailorsThird Module

  • Trim Loops

  • Helm/Sail Feedback

  • Spinnaker Shaping




Sail shaping for performance sailors third module1
Sail Shaping for Performance SailorsThird Module

  • Trim Loops

  • Helm/Sail Feedback

  • Spinnaker Shaping


Trim loops
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





Trim loops instrument use
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


Sail shaping for performance sailors third module2
Sail Shaping for Performance SailorsThird Module

  • Trim Loops

  • Helm/Sail Feedback

  • Spinnaker Shaping


Helm sail feedback
Helm/Sail Feedback

  • Slight Weather Helm Set-up

  • Perfectly Balanced Helm - Fast

  • Upwind Puff Cards - Heel and Induced Weather Helm




Sail shaping for performance sailors third module3
Sail Shaping for Performance SailorsThird Module

  • Trim Loops

  • Helm/Sail Feedback

  • Spinnaker Shaping


Symmetrical spinnakers
Symmetrical Spinnakers

  • Generational Designs & Specialty Designs

  • Trim Fundamentals

  • Special Circumstance Trim Requirements



1970 s islander 36 radial head symmetrical spinnaker
1970’s Islander 36Radial Head Symmetrical Spinnaker


I36 tri radial symmetrical spinnaker
I36 Tri-RadialSymmetrical Spinnaker



Symmetrical spinnaker trim fundamentals
Symmetrical Spinnaker Trim Fundamentals

  • Hoist

  • Trim

  • Gybing

  • Douse

  • Control




J24 2002 nas hoisting deeper angle when it s blowing
J24 2002 NAs HoistingDeeper Angle When it’s Blowing











Special circumstances iac alinghi spinnaker set
Special CircumstancesIAC Alinghi Spinnaker Set


J24 2005 nationals 30 knot squall
J24 2005 Nationals30 Knot Squall


J24 2005 nationals 37 knot squall
J24 2005 Nationals37 Knot Squall


Wing on wing the other option
Wing-on-Wing“The Other Option”



Sail shaping for performance sailors third module4
Sail Shaping for Performance SailorsThird Module

  • Trim Loops

  • Helm/Sail Feedback

  • Spinnaker Shaping


5 key factors for success
5 Key Factors for Success

  • Trim Spinnaker with Constant 3 “ to 6” Curl

  • Square the Pole Visually By Vertical Luff and Vertical Center Seam

  • Keep Windward Clew (the tack) Slightly Lower

  • Luff Breaking Too High – Pole Up, Breaking Too Low - Pole Down

  • Always Remember to Have Fun!


I36 fleet racing sf bay the chess game
I36 Fleet Racing SF Bay“The Chess Game”


Sail shaping for performance sailors final q a
Sail Shaping for Performance SailorsFinal Q&A

  • Trim Loops

  • Helm/Sail Feedback

  • Spinnaker Shaping



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