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Underdeck Furling System — 3 mm Luff Wire Underdeck Furling System — 3 mm Luff Wire Underdeck Furling System — 3 mm Luff Wire Underdeck Furling System — 3 mm Luff Wire
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Underdeck Furling System — 3 mm Luff Wire

Part No. 477
 
Drum Ø (mm)79 mm
Maximum luff wire Ø (mm)3 mm
Maximum working load (kg)431 kg

Small Boat underdeck furling units are ideal for sportboats and daysailers from 4.8 m to 9 m (16 to 30 ft). The drum is located beneath the deck, lowering the tack height for maximized sail area. An optional hoistable ball bearing halyard swivel can be installed on your headstay so you can raise or lower the sail without removing the headstay. Swivels are independent of the headstay, allowing you to tension the luff separately from the mast rake.

FootnoteIncludes drum and upper swivel. Does not include hoistable swivel. 
Pin-to-pin length (mm)156 mm
Drum Ø (mm)79 mm
Minimum line Ø (mm)3 mm
Maximum line Ø (mm)4 mm
Jaw width (mm)8 mm
Maximum luff wire Ø (mm)3 mm
Clevis pin Ø (mm)6.4 mm
Weight (g)661 g
Maximum working load (kg)431 kg
Manual: 4428.pdf (open/save)
DWG: 477.DWG (open/save)
DXF: 477.DXF (open/save)
IGS: 477.IGS (open/save)
EPS: 477.eps (open/save)
High-res JPG: 477.jpg (open/save)

DO NOT use Harken equipment for human suspension unless product is specifically certified and labeled for such use.

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