Harken 7413.11 3/4 MKIV Unit 3 Underdeck Jib Reefing Furling System
Harken’s MKIV Underdeck Jib Reefing & Furling line is the perfect solution for sailors who want an aerodynamic system with a minimal amount of equipment above deck. The underdeck furler provides a low-friction, clean layout solution that minimizes windage, while uncluttering the bow for easy anchor access. Tack sits at deck level, lowering the tack height for maximized sail area. Through-deck bearing into underdeck compartment provides a low profile, nearly watertight system. Typical Boat Length 13.7 - 18.3 m (45' - 60')
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.
| B (mm) | 208 mm |
| B (in) | 8 3/16 in |
| Wire Ø (1 x 19 SS) (mm) | 12 mm |
| Wire Ø (1 x 19 SS) (in) | 7/16 in |
| Rod Ø (mm) | 11.1 mm |
| Rod Ø (dash) | -30 |
| Clevis pin Ø (mm) | 19.1 mm |
| Clevis pin Ø (in) | 3/4 in |
| Standard headstay length (m) | 22.88 m |
| Standard headstay length (ft in) | 75' 1" ft in |
| Maximum headstay length (m) | 25.02 m |
| Maximum headstay length (ft in) | 82' 1" ft in |
| A minimum (mm) | 410 mm |
| A minimum (in) | 16 1/8 in |
| A maximum (mm) | 600 mm |
| A maximum (in) | 23 5/8 in |
| C minimum (mm) | 175 mm |
| C minimum (in) | 6 7/8 in |
| C maximum (mm) | 365 m |
| C maximum (in) | 14 3/8 in |
| J (mm) | 38 mm |
| J (in) | 1 1/2 in |
| K (mm) | 43 mm |
| K (in) | 1 11/16 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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