4/17/2019
Sail Trim • Boat Prep - Clean Bottom, all gear works. Winches, halyards, traveler, cleats. • Rig Tune - Rig is straight side to side and forestay tension and mast bend are correct for conditions. • Boat Trim - All excess gear off, no weight in ends of boat, crew weight on the rail. • Annapolis • Advanced Boat Handling - Tacks and Gybes , Mark • Deltaville Roundings . • Hampton • Sail Trim - Correct trim for conditions
1 2
1. Like a Wing 2. Like a Barn Door 3. Combination
3 4
5 6
1 4/17/2019
7 8
9 10
11 12
2 4/17/2019
Defining Sail Shape
40%
13%
Cord Draft Position of Max Draft Entry Angle Exit Angle
13 14
Twist
Broadseam Luff Curve
15 16
Broadseam Luff Curve
17 18
3 4/17/2019
19 20
Mainsail Mainsail Halyard/Cunningham Trim Controls Trim Controls Outhaul Mainsheet & Vang Traveler Backstay
21 22
Golden Rule of Mainsail Trim Place Boom on Centerline and make top batten parallel with it.
23 24
4 4/17/2019
Light Air Mainsail Trim Medium Air Mainsail Trim
Boom on centerline and upper batten slightly open Boom on centerline and upper batten parallel
25 26
Heavy Air Mainsail Trim Twist Controls
• Sheet • Vang • Backstay
Boom below centerline and leech twisted open
27 28
Light Air Mainsail Trim Wind Shear
Boom on centerline and upper batten slightly open
29 30
5 4/17/2019
Heavy Air Mainsail Trim
Boom below centerline and leech twisted open
31 32
Hard Halyard Tension Good Halyard Tension
Draft Forward and vertical stress wrinkles on luff Draft at design point and neutral tension on luff
33 34
Soft Halyard Tension
Halyard/Cunningham Outhaul Sheet Vang Backstay Traveler
Draft aft and horizontal wrinkles on luff
35 36
6 4/17/2019
Genoa/Jib Halyard Trim Controls Backstay Sheet Lead & Sheet Tension
37 38
Golden Rule of Genoa Trim
Use relationship between shrouds and leech. Should be roughly same distance top and bottom
39 40
1 st Gear
41 42
7 4/17/2019
43 44
45 46
Light Air Genoa Lead
Rounder shape on foot and leech, more power, less twist
47 48
8 4/17/2019
Medium Air Genoa Lead Heavy Air Genoa Lead
Medium Shape on foot and leech, good power and point Flat shape on foot and open leech, good DE - power and point
49 50
Outboard Leads 1 st Gear 2nd Gear
3rd Gear 4th Gear
51 52
Forestay Sag Comparison
Light Air - Soft Medium Air - Medium Heavy Air - Hard
53 54
9 4/17/2019
Heavy Air Headstay Sag Medium Air Headstay Sag
*Hard backstay *Medium backstay *More halyard tension *Even halyard tension
Medium - flat entry, better speed and DE - Powering Flatter entry, better speed and pointing
55 56
Light Air Headstay Sag Headstay Sag Comparison
*Light backstay *Hand tight + halyard tension
Fuller and more powerful entry, better speed building Light Air - Soft Medium Air - Medium Heavy Air - Hard
57 58
Halyard/Cunningham Backstay Sheet Lead & Sheet Tension Slot
59 60
10