258
4:1
6:1
8:1
A
B
A
B
A
B
4:1
A
A
C
B
D
4:1/16:1
A
A
B
C
D
4:1/16:1
A
A
D
A
E
B
C
6:1/24:1
A
C
B
E
D
6:1/24:1
A
B
C
D
F
Mainsheet
6:1 Reeved Right Angle: 
Boats with mainsails to 
35 m
2 (375 ft
2) often 
use a 6:1 system.
4:1 Fiddle: This 4:1 
tackle is the most 
common system on 
boats under 8.5 m (28').
4:1 Swivel Base: Position the swivel 
base block off the traveler car to allow 
mainsail adjustment without dragging 
the car to windward in light air. To 
avoid tightening the leech, curve the 
track ends up.
6:1/24:1 Gross/Fine: This 6:1/24:1 
cascading system is used on boats 
with end-boom sheeting and mains 
as large as 25.5 m
2 (275 ft2) and 
end-boom sheeting.
4:1/16:1 Gross/Fine: This 
powerful gross-trim/fine-tune 
cascading system allows crew 
to use the 4:1 gross-trim for 
most trimming and the 16:1 
fine-tune for precise adjustments.
4:1/16:1 Double-ended Fine Tune: 
This 4:1/16:1 system uses a dinghy-like 
double-ended tackle that locates the sheet 
ends on the cockpit sides.
8:1 Beachcat: This 8:1 
purchase handles high 
mainsheet loads on 
Beachcats up to 
6 m (20'). 
Typical boat length:
Small Boat:  6.7 - 8.5 m (22 - 28')
Midrange:  
8.8 - 10.4 m (29 - 34')
Big Boat:  
10.7 - 12.8 m (35 - 42')
Diagram
Ref.
Description
Small Boat
Part No.
Midrange
Part No.
Big Boat
Part No.
4:1 Fiddle
A
Fiddle
2621
2690
1559
B
Fiddle
2676
2697
1566
6:1 Reeved Right Angle
A
Triple
2604
2664
1546
B
Triple
2141
2686
1556
8:1 Beachcat
Multihulls
2.4 - 4.3 m
(8 - 14')
4.6 - 6 m
(15 - 20')
6.4 - 9 m
(21 - 30')
A
Quad
2654
2631
2677
B
Triple
2619
2632
2687
4:1 Swivel Base
A
Single
2600
2660
1540
B
Single
2601
2661
1541
C
Single
2135
2670
1549
D
Cam base
205
144
1574
4:1/16:1 Gross/Fine
A
Single
2636
2600
2660
B
Double
381
2642
2602
C
Fiddle
2658
2676
2697
D
Fiddle
2675
2696
1565
4:1/16:1 Double-ended Fine Tune
A
Single
2636
2600
2660
B
Single
2135
2135
1549
C
Cam base
205
144
1574
D
Double
342
2638
2602
E
Single
349
2652
2600
F
Cam cleat
471
471
150
6:1/24:1 Gross/Fine
A
Double
2638
2602
2662
B
Triple
2647
2629
1555
C
Single
2636
2600
2660
D
Fiddle
2655
2621
2690
E
Fiddle
2676
2676
2697
6:1/24:1 Cascaded
A
Triple
2640
2604
2664
B
Triple
2617
2629
2685
C
Double
2638
2638
2602
D
Fiddle
2658
2658
2676
6:1/24:1 Cascaded: This 
6:1/24:1 system is used 
on boats with mains as 
large as 25.5 m
2 (275 ft2)
and end-boom sheeting.
Part numbers represent hardware most commonly used.

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