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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
$4,791.00  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.

Extrusion length (ft in)7 ft in
Luff tape size (mm)5 mm
Luff tape size (in)#6 (6/32) in
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
Manual: 4656.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 unless product is specifically certified and labeled for such use.

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