Harken Yacht Equipment Catalog OnLine

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Furling Systems > Code Zero Furling

Originally built for Volvo 60s, Code Zero furlers are used with free-flying asymmetrical headsails and staysails. Suitable for boats up to 125' (38 m), they tame Code Zero sails, screechers, Gennakers^® and staysails.

The eight-faceted sheave-drive grips line aggressively to furl these huge sails with minimal line. Its large diameter makes furling smooth and easy. The Code Zero's spring-loaded arms hold line captive in the sheave. Arms open to remove the line for quick unfurling, or to strike the furler. A built-in stripper safely guides line out of the furler. The lower unit incorporates a quick sail disconnect by pushing a spring-loaded button.

Compact hardened steel roller thrust bearings handle extremely high luff loads. Furler heights are kept to a minimum, so luff lengths can be at maximum length.

Since furling a Code Zero sail requires very high luff tension, a 2:1 adapter is available. This fits either the upper or the lower unit, but installation on the upper is advised to prevent halyard twisting. A snap shackle adapter allows quick disconnect.

To handle torsional load, we recommend a dual luff cord system. This system uses thimbles to loop the cords around the tack and head of the sail. Talk to your sailmaker. Code Zero furlers are not for reefing.

Use CO-00 for boats from 20' - 30' (6 - 9 m).
Use CO-0 for boats from 25' - 40' (8 -12 m).
Use CO-1 for boats from 35' - 50' (11 -15 m).
Use CO-2 for boats from 45' - 70' (14-21 m).
Use CO-3 for boats from 60' - 95' (18-29 m).
Use CO-4 for boats from 85' -125' (26 - 38 m).

3100
3101
3126
3127
3128
3115
Spring-loaded button for quick sail disconnect
Compact height allows long luff lengths
Arms allow easy line removal, but snap shut to keep line captive
Aggressive, large-diameter sheave drive for easy furling
Sealed hardened-steel thrust bearing system for extreme loading
Integral stripper to peel line out of unit safely

3116
3117
3118
3119
3120
3105
3106
3107
3108
3109
3110
3111
3112
3113
3114

Furlers

Part No. Description Pin-to-pin length Drum Swivel Line Pin/shackle Weight Safe working load Breaking strength

Min Max

in mm in mm in mm in mm in mm in mm oz kg Ib kg Ib kg

3100 Code Zero 00 2³/₄ 70 4 102 1¹¹/₁₆ 43 ³/₁₆ 5 ¹/₄ 6 — 6 28 .79 2750 1250 5500 2500

3101 Code Zero 0 3³/₈ 86 5 127 2¹/₈ 54 ¹/₄ 6 ⁵/₁₆ 8 ⁵/₁₆ 8 40 1.13 5000 2272 10000 4545

3115 Code Zero 4 6¹³/₁₆ 173 11 279 4¹/₂ 114 ³/₈ 10 ¹/₂ 12 — 20 276 7.82 29500 13409 59000 26818

3126 Code Zero 1 4¹⁵/₁₆ 125 6 152 2¹/₈ 54 ¹/₄ 6 ⁵/₁₆ 8 — 10 64 1.81 8000 3628 16000 7256

3127 Code Zero 2 6³/₈ 162 7 178 2³/₄ 70 ⁵/₁₆ 8 ³/₈ 10 — 12 87 2.47 12000 5442 24000 10884

3128 Code Zero 3 7¹³/₁₆ 198 8 203 3³/₈ 86 ⁵/₁₆ 8 ³/₈ 10 ⁵/₈ 16 181 5.13 18000 8163 36000 16326

Accessories

Part No. Description Pin/shackle Weight Safe working load Breaking strength

in mm oz kq Ib kg Ib kg

3105 2:1 Sheave adapter 00 — 6 8 .23 2750 1250 5000 2500

3106 2:1 Sheave adapter 0 ⁵/₁₆ 8 11 .31 5000 2272 10000 4545

3107 2:1 Sheave adapter 1 — 10 10 .28 8000 3628 16000 7256

3108 2:1 Sheave adapter 2 — 12 24 .68 12000 5442 24000 10884

3109 2:1 Sheave adapter 3 ⁵/₈ 16 40 1.13 18000 8163 36000 16326

3110 Snap shackle adapter 00 — 6 6 .17 2750 1250 5500 2500

3111 Snap shackle adapter 0 ⁵/₁₆ 8 8 .23 5000 2272 10000 4545

3112 Snap shackle adapter 1 — 10 17 .48 8000 3628 16000 7256

Part No. Description Pin/shackle Weight Safe working load Breaking strength

in mm oz kq Ib ^kd Ib kg

3113 Snap shackle adapter 2 — 12 34 .96 12000 5442 24000 10884

3114 Snap shackle adapter 3 ⁵/₈ 16 57 1.62 18000 8163 36000 16326

3116 Thimble set 00 For Code Zero 00

3117 Thimble set 0 For Code Zero 0

3118 Thimble set 1 For Code Zero 1

3119 Thimble set 2 For Code Zero 2

3120 Thimble set 3 For Code Zero 3

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