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Unit 0 Underdeck Furling System Unit 0 Underdeck Furling System Unit 0 Underdeck Furling System Unit 0 Underdeck Furling System
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Unit 0 Underdeck Furling System

Part No. 7410.11
$3,935.00  Not available on-line. Please contact your Harken dealer.
Wire Ø (1 x 19 SS) (mm)5, 6 mm
Wire Ø (1 x 19 SS) (in)3/16, 7/32 in
Rod Ø (mm)4.37, 5.03 mm
Rod Ø (dash)-4, -6

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.

Luff tape size (mm)6 mm
Luff tape size (in)#6 (6/32) in 
Wire Ø (1 x 19 SS) (mm)5, 6 mm
Wire Ø (1 x 19 SS) (in)3/16, 7/32 in
Rod Ø (mm)4.37, 5.03 mm
Rod Ø (dash)-4, -6 
Standard headstay length (m)11.7 m
Standard headstay length (ft in)38' 4" ft in
Maximum headstay length (m)13.8 m
Maximum headstay length (ft in)45' 4" 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)23 mm
K (in)7/8 in
L (mm)26 mm
L (in)1 1/32 in
Extrusion length (m)2.13 m
Extrusion length (ft in)7' ft in
Manual: 4427.pdf (open/save)
Manual: 4427-PartsList.pdf (open/save)
DWG: 7410.11.DWG (open/save)
DXF: 7410.11.DXF (open/save)
IGS: 7410.11.IGS (open/save)
EPS: 7410.11.eps (open/save)
High-res JPG: 7410.11.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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