38
(400)
(401)
(385)
(386)
HSB534
System
332
Two-Speed Mainsheet 
Systems
Harken gross-trim/fine-tune mainsheet systems are 
easy to install and use. These optimized systems decrease overall line clutter 
because they use less line than traditional gross-trim/fine-tune systems. For 
fast trimming, pull both tails of the mainsheet. To fine-tune or to trim using a 
higher purchase, pull a single tail.
Two-speed mainsheet systems come in three configurations for boats from 
6.5 m to 11.8 m (22 - 39'), with mains as large as 32.4 m2 (350 ft
2).
Components
Systems
System
383
*Line not included.
Part
No.
Description
Sheave Ø
Length
Weight
Primary
Secondary
in
mm
in
mm
in
mm
oz
g
 385 
 Double fi ddle 
 3 
 76 
 1 3/4 
 44 
 7 3/4 
 197 
 21 
 595 
 386 
 Double fi ddle/ratchet/cross block/412 Cam-Matic 
 3 
 76 
 2 1/4, 1 3/4 
 57, 44 
 11 1/2 
 292 
 37 
 1049 
 400 
 Double/cross block 
 3 
 76 
 2 1/4 
 57 
 9 1/2 
 241 
 22 
 625 
 401 
 Double fi ddle/ratchet/412 Cam-Matic 
 3 
 76 
 1 3/4 
 44 
 7 1/4 
 184 
 31 
 885 
Part
No.
Description
Line Ø
Max mainsail area
Min
Max
End-boom
Mid-boom
in
mm
in
mm
ft²
m²
ft²
m²
 332 
 3:1/6:1 self-contained system* 
 5/16 
 8 
 3/8 
 10 
 240 
 22.3 
 180 
 16.9 
 383 
 4:1/8:1 self-contained system* 
 5/16 
 8 
 3/8 
 10 
 350 
 32.4 
 275 
 25.5 
Dinghy Vang
The dinghy vang features 16 mm sheaves with stainless ball bearings for high loads. 
The assembly includes a 468 Micro Cam-Matic® cleat that allows precise trimming. 
It’s easy to cleat because it pivots for a fair lead. The unit connects to a mast bracket 
with a 1/4" pin. The system provides a 12:1 purchase when cascaded with 4:1 blocks. 
The vang lower unit is available by itself or as part of a kit, which includes a 16 mm 
double block cascaded to a Micro single with becket for the vang purchase, plus a 
Micro single for attaching the cunningham.
*Order your own line, 406, and 225 blocks to complete system.
Part
No.
Description
Weight
Max
sail area
Maximum
working load
Breaking
load
oz
g
ft²
m²
lb
kg
lb
kg
 431 
 Dinghy vang kit 
 10.3 
 291 
 125 
 11.6 
 400 
 181 
 1000 
 454 
 HSB534  Dinghy vang lower unit* 
 8.1 
 229 
 125 
 11.6 
 400 
 181 
 1000 
 454 

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