Offshore Cruising Sails
Built for the open ocean. Engineered for endurance.
Where the coast fades away, your confidence in your sails begins. Offshore cruising sails are built for sailors who look beyond the horizon. Whether you are navigating unpredictable coastal waters or planning an ocean crossing, these sails are engineered to withstand the relentless forces of the open sea, mile after mile, storm after storm.
At 30 Knots, we deliver the ultimate blueprint for serious blue water cruising, designed and built by SudWest Sails. This Dutch premium label combines traditional Friesian craftsmanship with cutting-edge technology to create our dependable mid-range powerhouse: a sail that strikes the perfect balance between unbreakable durability, high performance, and an accessible price point.
Advanced Construction & Premium Materials
While inshore cruising thrives on a classic crosscut layout, the Offshore range opens up new dimensions in shape retention and strength:
Triradial & Crosscut Options: Choose a robust crosscut layout or step up to a Triradial construction. Triradial layouts align the cloth fibres perfectly with the primary load paths of the sail, keeping your sail flatter and your boat faster when the wind picks up.
Elite Cloth Selection: We don’t compromise on fabric. Depending on your goals, we select from world-class options including Fibercon, WarpTech, or the legendary Hydranet Dyneema Hybrid, the absolute gold standard for global trade-wind voyagers who demand zero-tolerance stretch and maximum tear resistance.
Zero Compromise. 100% Custom.
There are no shortcuts on the ocean. Every single offshore sail is masterfully designed from scratch by SudWest Sails designer Ramses Landman. Your sail will be meticulously tailored to the exact specifications of your yacht, your blue water itinerary, and the specific challenges of your sailing area.
Configure your offshore cruising sail below. We’ll get back to you with a tailor-made quote.
Sail Configurator
Triradial construction for maximum shape retention and offshore endurance. Hover over the sail or the list to explore each feature.
Radial Dyneema top, clew, and tack reinforcements
Optimized load distribution
Rutgerson or Seldén fittings
High-quality stainless steel hardware
Dyneema reef reinforcements
Optimal reinforcement when reefed
Blue Streak battens
With batten receptacle and M10 master slider
Glued and stitched seams
Maximum reinforcement
Radial Dyneema top, clew, and tack reinforcements
Optimized load distribution
Rutgerson or Seldén fittings
High-quality stainless steel hardware
4 Short vertical battens
Optimised for furling — minimal interference with the furling system
Glued and stitched seams
Maximum reinforcement
Radial Dyneema top, clew, and tack reinforcements
Optimized load distribution
Rutgerson or Seldén fittings
High-quality stainless steel hardware
Full vertical battens
Maximum shape retention — full-length battens for optimal sail profile
Glued and stitched seams
Maximum reinforcement
Extra-long top, leech, clew, and tack reinforcements
For optimal reinforcement when the sail is reefed
Radial Dyneema top, clew, and tack reinforcements
Triradial bonded and stitched at all three corners
Shape retention system
Stable sail profile even when the sail is reefed
UV sleeve (available in various colours)
Provides UV protection when the sail is furled
Rutgerson or Seldén fittings
Reliable, high-quality hardware at the clew
Extra-long top, leech, clew, and tack reinforcements
For optimal reinforcement when the sail is reefed
Radial Dyneema top, clew, and tack reinforcements
Triradial bonded and stitched at all three corners
Shape retention system
Stable sail profile even when the sail is reefed
UV sleeve (available in various colours)
Provides UV protection when the sail is furled
Rutgerson or Seldén fittings
Reliable, high-quality hardware at the clew
Sailcloth Selection
CDX Pro & DCX — Performance Laminates
Two world-class laminate options for offshore cruising performance sails. Both engineered for shape retention, UV resistance, and long-term durability in demanding conditions.
CDX Pro Polyester Cruising Laminates
CDX Pro laminates are engineered for durability and cruising performance. The range is built around a series of sub-assemblies using different weights of taffetas and a 500 denier polyester cross-ply, combined with a 6000 dpi polyester insertion — creating a range of styles stepping up in weight and strength.
TiO2 in the adhesive adds UV resistance, and a robust anti-mildew additive provides advanced protection against mildew. Available in Natural White and Cool Grey. Designed for radial cut sails from 24 to 48 feet.
Construction: Polyester Taffeta · 60° X-Ply · Film · 0° Inserts · Film · 60° X-Ply · Polyester Taffeta
| Style | Film mil. | Weight g/m² | Weight SM oz | Colour | Mainsail | 100% Furling | 135% Furling |
|---|---|---|---|---|---|---|---|
| CDX Pro 5 | 1.0 | 223 | 5.2 | White | ±28ft (±8m) | ±28ft | ±28ft |
| CDX Pro 6 | 1.25 | 261 | 6.1 | White / Grey | ±32ft (±10m) | ±32ft | ±32ft |
| CDX Pro 7 | 1.5 | 317 | 7.4 | White / Grey | ±36ft (±11m) | ±36ft | ±36ft |
| CDX Pro 9 | 1.75 | 364 | 8.5 | White / Grey | ±40ft (±12m) | ±40ft | ±40ft |
| CDX Pro 11 | 2.0 | 407 | 9.5 | White / Grey | ±44–48ft (±13–14m) | ±44–48ft | ±44–48ft |
DCX Line · Dimension-Polyant
The DCX Line is Dimension-Polyant's answer for ambitious cruising sailors who want low stretch without compromising handleability. A mesh embedded in two films with a special taffeta on both ends delivers excellent warp stretch resistance and high tear strength.
The UVM® Finish coating adds UV protection and mildew resistance. The DCX upgrade over the DC mother line introduces a 9° X-PLY® for significantly increased support for diagonal forces — a meaningful improvement for offshore sailing in variable conditions. Climate neutral certified by CleanTEC.
Key properties: Improved elongation resistance · Excellent diagonal stability · Highly resistant surfaces · UV stabilisation · Mildew protection
| Boat length | Mainsail | #1 Jib | #2 Jib | #3 Jib |
|---|---|---|---|---|
| 26–30 ft | DCX-L | DCX-SL | DCX-L | DCX-L |
| 31–35 ft | DCX-M | DCX-L | DCX-L | DCX-M |
| 36–40 ft | DCX-M | DCX-L | DCX-L | DCX-M |
| 41–45 ft | DCX-H | DCX-M | DCX-M | DCX-H |
Configure your Triradial sail
Mainsail, Jib or Genoa — triradial construction with CDX Pro or DCX laminate. We'll get back to you with a tailor-made quote.
Configure Triradial SailContact us
Have questions about our sails or need personal advice? Get in touch with our team.
ContactSailcloth Technology
Fibercon® AP (All Purpose)
Contender's Fibercon® AP enables the construction of high-quality cruising sails with an exceptionally competitive price-to-performance ratio. Efficiently woven from exclusive high-tenacity Fibercon yarns, this versatile "All Purpose" cloth features a robust construction combined with an advanced Polypreg finish. It is the premier choice for coastal and offshore cruisers demanding uncompromised durability, shape-holding, and reliable handling without the premium investment.
Key Specifications
- High-Tenacity Yarns:Woven exclusively with custom-spun fibers ensuring maximum initial breaking strength and low stretch.
- Polypreg Coating:Available in tailored medium or firm finishes to match handling comfort or performance-oriented diagonal stability.
- Versatile Architecture:Engineered specifically for long-lasting, heavy-duty cross-cut mainsails and furling headsails.
- Maximum UV Protection:Infused with advanced chemical UV blockers directly into the polymer structure to withstand tropical degradation.
| Yacht Size (ft) | Recommended Spec / Weight |
|---|---|
| 28 ft | Mainsail: 6.38 oz | Headsail: 5.38 / 6.38 oz |
| 32 ft | Mainsail: 7.38 oz | Headsail: 6.38 / 7.38 oz |
| 36 ft | Mainsail: 8.38 oz | Headsail: 7.38 / 8.38 oz |
| 40 ft | Mainsail: 9.38 oz | Headsail: 8.38 / 9.38 oz |
| 44 ft | Mainsail: 10.38 oz | Headsail: 9.38 / 10.38 oz |
| 48 ft | Mainsail: 10.38 oz | Headsail: 10.38 oz |
| 52 ft | Mainsail: 11.38 oz | Headsail: 10.38 oz |
| Layer / Component | Technical Detail |
|---|---|
| Base Fiber | Exclusive In-House Spun High-Tenacity Polyester |
| Weave Style | Ultra-Dense Balanced Cross-Cut Weave |
| Finish Opts | Medium (Ease of Handling) or Firm (Diagonal Stability) Polypreg |
Ready to spec your sail?
Tell us your boat, your sailing area, and how you sail. We'll recommend the right cloth weight, colour, and finish — and build you a sail that fits.
Request an Offshore Cruising Sail Quote