Hardware
Code Zero Hardware
Section titled “Code Zero Hardware”Hardware specifications for Code Zero sails — covering all sail-side components for attachment, furling, sheeting, and handling.
Corner Hardware
Section titled “Corner Hardware”Code Zero sails experience high luff tension and significant dynamic loads. All corner fittings must be rated accordingly.
Head Fitting
Section titled “Head Fitting”| Type | Description | Best For |
|---|---|---|
| Pressed ring (#4-#5) | Standard stainless steel ring with webbing reinforcement | Cruising Code Zeros |
| Soft shackle loop | Dyneema soft loop for halyard attachment | Racing — lightweight |
| Swivel fitting | Fitted swivel for anti-wrap halyard | Boats without anti-torsion rope |
Critical: The head fitting must allow free rotation to prevent the sail wrapping around the forestay/furler during hoisting.
Tack Fitting
Section titled “Tack Fitting”| Type | Description | Notes |
|---|---|---|
| Tack ring + tack line | Ring at tack, adjustable tack line to bowsprit end | Most common — allows luff tension adjustment |
| Fixed shackle | Direct shackle attachment to bowsprit fitting | Simpler but no luff adjustment |
| Soft shackle | Dyneema soft shackle | Racing — lightweight, requires manual tension |
Tack line specification:
- Diameter: 8-12mm (boat size dependent)
- Material: Low-stretch polyester or Dyneema
- Purchase: 2:1 or 4:1 (depending on luff loads and boat size)
Clew Fitting
Section titled “Clew Fitting”| Type | Description | Best For |
|---|---|---|
| Pressed ring (#5-#6) | Standard heavy-duty ring | Cruising |
| Spectacle fitting | Twin-ring for dual sheets | Boats that tack the Code Zero |
| Low-friction ring | Dyneema ring (e.g., Harken LFR) | Racing — reduced sheet friction |
For detailed ring specifications (sizes, breaking loads), see Corner Fittings & Rings.
Furling Integration
Section titled “Furling Integration”Code Zero sails use bottom-up continuous line furling. The sail-side hardware must interface correctly with the furler.
Luff System
Section titled “Luff System”| Component | Specification | Notes |
|---|---|---|
| Anti-torsion rope | Spectra/Dyneema core with braided cover | Built into luff pocket; prevents spiraling when furled |
| Luff tape | Integrated into torsion rope sleeve | Must match furler groove diameter |
| Swivel | Top swivel (integral to furler) | Halyard attaches here, allows rotation |
Anti-torsion rope sizing:
| Boat LOA | Rope Diameter | Typical Breaking Load |
|---|---|---|
| 28-35ft | 8-10mm | 3,000-5,000 kg |
| 35-45ft | 10-12mm | 5,000-8,000 kg |
| 45-55ft | 12-16mm | 8,000-12,000 kg |
Furler Interface
Section titled “Furler Interface”| Component | Sail-Side Requirement |
|---|---|
| Drum connection | Tack ring must clear drum housing — check cutback |
| Top swivel | Head fitting must connect to swivel eye, not forestay |
| Torsion rope termination | Spliced eye at top and bottom, seized into luff tape |
| Groove compatibility | Luff tape must match furler groove (typical: 6-8mm) |
For complete furler specifications and brand references, see Continuous Line Furlers.
Sheet System
Section titled “Sheet System”Code Zero sheets operate differently from standard headsail sheets — they need to handle both reaching loads and the wide tacking arc.
Sheet Specifications
Section titled “Sheet Specifications”| Boat LOA | Sheet Diameter | Sheet Length (per side) | Material |
|---|---|---|---|
| 28-35ft | 10-12mm | 20-25m | Low-stretch polyester or Dyneema |
| 35-45ft | 12-14mm | 25-35m | Low-stretch polyester or Dyneema |
| 45-55ft | 14-16mm | 35-45m | Dyneema core with polyester cover |
Lead Position
Section titled “Lead Position”| Sailing Angle | Lead Position | Notes |
|---|---|---|
| Close reaching (50-70°) | Forward, near shrouds | Sheet angle ~15° |
| Beam reaching (80-100°) | Mid-deck, outboard | Sheet angle ~20° |
| Broad reaching (100-130°) | Aft quarter | Ease sheet significantly |
Common setup: Snatch block on toerail or dedicated pad eye, adjustable positioning.
Clew Velcro (Furling Assist)
Section titled “Clew Velcro (Furling Assist)”| Property | Specification |
|---|---|
| Function | Holds clew tight against furled roll |
| Material | Marine-grade hook-and-loop (Velcro) |
| Width | 50-75mm |
| Length | Enough to wrap 1.5x around furled diameter |
| Attachment | Sewn to sail at clew area with webbing backup |
Why it matters: Without clew Velcro, the furled Code Zero’s tail end flaps in any breeze, increasing UV exposure and creating noise. This is a small detail that significantly affects customer satisfaction.
Retrieval / Snuffer Integration
Section titled “Retrieval / Snuffer Integration”Many cruising Code Zeros use a snuffer (sock) for deployment and retrieval.
Sail-Side Requirements for Snuffer Use
Section titled “Sail-Side Requirements for Snuffer Use”| Feature | Requirement |
|---|---|
| Head fitting | Must pass through snuffer ring (max ring diameter matters) |
| Leech line | Internal only — external leech lines snag on snuffer |
| Telltale ribbons | Sewn flat — no protruding items that catch |
| Battens | None (battens prevent snuffer from sliding down) |
Snuffer Compatibility Note
Section titled “Snuffer Compatibility Note”If the customer plans to use a snuffer, confirm the snuffer ring inner diameter before finalizing head fitting dimensions. The head swivel + webbing must pass cleanly through the ring.
Maintenance Guidelines
Section titled “Maintenance Guidelines”| Component | Interval | Action |
|---|---|---|
| Anti-torsion rope | Annual | Inspect for chafe at top/bottom terminations |
| Tack line | Seasonal | Check for UV degradation, re-splice if worn |
| Clew Velcro | Seasonal | Clean hook side (collects salt and debris) |
| Corner rings | Annual | Inspect for corrosion, deformation |
| Sheets | Seasonal | Check for chafe at block contact points |