Islander 36 FleetIslander 36 FleetSan Francisco BaySan Francisco Bay

Sail Shaping for Performance Sailors Sail Trim Lecture

Module #3

Sail Shaping for Performance SailorsSail Shaping for Performance SailorsThird ModuleThird Module

Trim LoopsHelm/Sail FeedbackSpinnaker Shaping

J24 Parallel LeechesJ24 Parallel Leeches

Islander 36 Parallel LeechesIslander 36 Parallel Leeches

Sail Shaping for Performance SailorsSail Shaping for Performance SailorsThird ModuleThird Module

Trim LoopsHelm/Sail FeedbackSpinnaker Shaping

Trim LoopsTrim 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

Telltales - Point ModeTelltales - Point Mode

I36 Polar Diagram - VPPI36 Polar Diagram - VPP

I36 Performance PredictionI36 Performance Prediction

Trim Loops – Instrument UseTrim 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 SailorsSail Shaping for Performance SailorsThird ModuleThird Module

Trim LoopsHelm/Sail FeedbackSpinnaker Shaping

Helm/Sail FeedbackHelm/Sail Feedback

Slight Weather Helm Set-upPerfectly Balanced Helm - FastUpwind Puff Cards - Heel and Induced

Weather Helm

IAC Sail Trim - TelltalesIAC Sail Trim - Telltales

IAC Genoa Trim & Draft StripesIAC Genoa Trim & Draft Stripes

Sail Shaping for Performance SailorsSail Shaping for Performance SailorsThird ModuleThird Module

Trim LoopsHelm/Sail FeedbackSpinnaker Shaping

Symmetrical SpinnakersSymmetrical Spinnakers

Generational Designs & Specialty DesignsTrim FundamentalsSpecial Circumstance Trim Requirements

General Spinnaker DesignsGeneral Spinnaker Designs

1970’s Islander 361970’s Islander 36Radial Head Symmetrical SpinnakerRadial Head Symmetrical Spinnaker

I36 Tri-RadialI36 Tri-RadialSymmetrical SpinnakerSymmetrical Spinnaker

Islander 36 Genniker/Cruising SpinnakerIslander 36 Genniker/Cruising Spinnaker

Symmetrical Spinnaker Trim Symmetrical Spinnaker Trim FundamentalsFundamentals

HoistTrimGybingDouseControl

One Ton Cup Hoist – “Ringing the Bell”One Ton Cup Hoist – “Ringing the Bell”

J24 Spinnaker HoistJ24 Spinnaker Hoist

J24 2002 NAs HoistingJ24 2002 NAs HoistingDeeper Angle When it’s BlowingDeeper Angle When it’s Blowing

Spinnaker TrimSpinnaker Trim

Wind Tunnel Demonstrating FlowWind Tunnel Demonstrating Flow

J24 Spinnaker Leech CurvesJ24 Spinnaker Leech Curves

Islander 36 Spinnaker TrimIslander 36 Spinnaker Trim

Farr 40 Worlds SF Farr 40 Worlds SF Symmetrical Spinnaker TrimSymmetrical Spinnaker Trim

IAC LVC Finals – SymmetricalIAC LVC Finals – Symmetrical

Islander 36 Reaching TrimIslander 36 Reaching Trim

IAC Symmetrical RunningIAC Symmetrical Running

IAC Oracle BMW Leeward TakedownIAC Oracle BMW Leeward Takedown

Special CircumstancesSpecial CircumstancesIAC Alinghi Spinnaker SetIAC Alinghi Spinnaker Set

J24 2005 NationalsJ24 2005 Nationals30 Knot Squall30 Knot Squall

J24 2005 NationalsJ24 2005 Nationals37 Knot Squall37 Knot Squall

Wing-on-WingWing-on-Wing“The Other Option”“The Other Option”

The “Other Option” ContinuedThe “Other Option” Continued

Sail Shaping for Performance SailorsSail Shaping for Performance SailorsThird ModuleThird Module

Trim LoopsHelm/Sail FeedbackSpinnaker Shaping

5 Key Factors for Success5 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!

I36 Fleet Racing SF BayI36 Fleet Racing SF Bay“The Chess Game”“The Chess Game”

Sail Shaping for Performance SailorsSail Shaping for Performance SailorsFinal Q&AFinal Q&A

Trim LoopsHelm/Sail FeedbackSpinnaker Shaping

Time to go Sailing!Time to go Sailing!