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Unit 1 Underdeck Furling System Unit 1 Underdeck Furling System Unit 1 Underdeck Furling System Unit 1 Underdeck Furling System
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Unit 1 Underdeck Furling System

Part No. 7411.11 1/2
$4,605.00  Not available on-line. Please contact your Harken dealer.
Wire Ø (1 x 19 SS) (mm)6, 7, 8 mm
Wire Ø (1 x 19 SS) (in)1/4, 5/16, 9/32 in
Rod Ø (mm)5.72, 6.35 mm
Rod Ø (dash)-10, -8
Clevis pin Ø (mm)12.7 mm
Clevis pin Ø (in)1/2 in

Harken’s MKIV Underdeck Furling is the perfect solution for performance racers and cruisers who want an aerodynamic system with a minimal amount of equipment above deck. The drum is located beneath the deck, lowering the tack height for maximized sail area.

DXF0f674402-0b22-4da2-a3ce-cd680d167cee.zip#7411.11_1-2.DXF 
DWG34597f90-fd49-43e1-abc0-b9428f402ba7.zip#7411.11_1-2.DWG 
IGSf5040168-6cfe-4e4f-9a67-cc84c3dd7c66.zip#7411.11_1-2.IGS 
Wire Ø (1 x 19 SS) (mm)6, 7, 8 mm
Wire Ø (1 x 19 SS) (in)1/4, 5/16, 9/32 in
Rod Ø (mm)5.72, 6.35 mm
Rod Ø (dash)-10, -8 
Clevis pin Ø (mm)12.7 mm
Clevis pin Ø (in)1/2 in
Standard headstay length (m)13.99 m
Standard headstay length (ft in)45' 11" ft in
Maximum headstay length (m)16.12 m
Maximum headstay length (ft in)52' 11" ft in
A (mm)96 mm
A (in)3 3/4 in
B (mm)150 mm
B (in)5 7/8 in
C maximum (mm)250 m
C maximum (in)9 7/8 in
D (mm)47 mm
D (in)1 7/8 in
E maximum (mm)1041 mm
E maximum (in)41 in
E minimum (mm)1003 mm
E minimum (in)39 1/2 in
F maximum (mm)213 mm
F maximum (in)8 3/8 in
F minimum (mm)209 mm
F minimum (in)8 1/4 in
G maximum (mm)186 mm
G maximum (in)7 5/16 in
G minimum (mm)183 mm
G minimum (in)7 3/16 in
H (mm)140 mm
H (in)5 1/2 in
I (mm)66 mm
I (in)2 5/8 in
J maximum (mm)59 mm
J maximum (in)2 5/16 in
J minimum (mm)56 mm
J minimum (in)2 3/16 in
K (mm)25 mm
K (in)1 in
L (mm)29 mm
L (in)1 1/8 in
Extrusion length (m)2.13 m
Extrusion length (ft in)7 ft in
Luff tape size (mm)5 mm
Luff tape size (in)#6 (6/32) in
Manual: 4656.pdf (open/save)
Manual: 4410.pdf (open/save)
Manual: 4656PartsUnit1.pdf (open/save)
DWG: 7411.11_1-2.DWG (open/save)
DXF: 7411.11_1-2.DXF (open/save)
IGS: 7411.11_1-2.IGS (open/save)

DO NOT use Harken Equipment for Human suspension.

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