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Unit 1 Underdeck Furling System

Part No. 7411.11 1/2

Wire Ø (1 x 19 SS) (mm) 8 mm

Wire Ø (1 x 19 SS) (in) 9/32 in

Rod Ø (mm) 6.35 mm

Rod Ø (dash) -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.
Wire Ø (1 x 19 SS) (mm)8 mm
Wire Ø (1 x 19 SS) (in)9/32 in
Rod Ø (mm)6.35 mm
Rod Ø (dash)-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 minimum (mm)270 mm
A minimum (in)10 5/8 in
A maximum (mm)397 mm
B (mm)140 mm
A maximum (in)15 5/8 in
B (in)5 1/2 in
C minimum (mm)117 mm
C minimum (in)4 5/8 in
C maximum (mm)244 m
C maximum (in)9 5/8 in
J (mm)25 mm
J (in)1 in
K (mm)29 mm
K (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

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Valid on orders shipping within the United States