Trim For Control

1
Trim For Control
Proper Sail Trim is all about balance. All boats
will go faster, be more comfortable to sail and
will handle more easily when sailing on their
lines.
2
The Goals

• UpwindVMG
• Offwind Maximizing Power
• At All Times Controlling Heel
• HEADSAIL TRIM CONTROLS
• MAINSAIL TRIM CONTROLS

3
Optimum VMG
4
(No Transcript)
5
the upwind problem
6
Sail Depth Power Heel
7
Headsail primary controls

• Genoa/Jib Sheet
• Lead Position
• Halyard Tension
• Backstay

8
Sheet Tension
9
jib sheet tension
10
why do we need to adjust sail trim
11
(No Transcript)
12
telltales and trim / driving
13
Halyard Tension
14
Lead Position

• Use tell-tales to set initial lead position
• Move lead aft to flatten bottom and twist off top
  - this will depower the sail
• Move lead forward to increase power in sail

15
Power Control headstay sag

• Adjusting backstay is primary control of headstay
  sag
• Light air - a little sag is often good
• Heavy air - too much sag will hurt the boats
  ability to go to weather and cause excessive heel

16
The Mainsail

• Main Sheet
• Traveller
• Vang
• Halyard Tension

• Cunningham
• Preventer
• Backstay
• Outhaul

17
mainsheet
18
mainsheet rule of thumb
19
twist for control
20
Why do we need to control twist
21
mainsheet off the wind
22
Vang

• controls twist off the wind

23
traveler
24
Luff Tension

• Cunningham
• Halyard Tension

25
Mainsail Depth

• Outhaul - Controls depth in lower third
• Backstay - Controls depth in middle/top

26
Three Modes of Trim
27
Reefing / the clew
28
reefing / the tack
29
Putting it All Together
30
and more