Windy 580 Information, Review, Specs

Make
Windy
Model
580
Builder
Nebe Boats
Designer
Dudley Dix
Number Built
Production Year(s)
1988 - ??

The Windy 580 is a classic South African racing dinghy that emerged from the fruitful collaboration between naval architect Dudley Dix and the Hout Bay-based Nebe Boatworks. Designed in the mid-1970s, the vessel was conceived as a high-performance, three-person racing machine intended to provide exhilarating speeds and tactical depth for competitive sailors. While Nebe Boatworks is perhaps better known for their heavy-displacement bluewater cruisers like the Shearwater 39, the Windy 580 represents the builder’s versatility and their significant contribution to the vibrant South African small-boat racing scene. Constructed primarily in glass-reinforced plastic (GRP), the 5.8-meter (approximately 19-foot) hull was engineered to be light enough to plane easily while remaining robust enough to handle the challenging, often gusty conditions of coastal South African waters.

Sailing Performance & Handling

The Windy 580 is characterized by its aggressive sail-area-to-displacement ratio, a design choice by Dudley Dix Yacht Design that prioritizes off-wind planing performance. As a three-person boat, it requires active weight management to keep the hull flat, particularly when the large symmetric spinnaker is deployed. Owners and former class racers often describe the boat as "twitchy" but rewarding; it tracks well in a steady breeze but demands quick reflexes from the helm and crew during maneuvers.

The hull features a relatively flat aft section, which allows the boat to break onto a plane early compared to other 19-footers of its era. On a reach, the Windy 580 is capable of sustained double-digit speeds. Its handling is akin to a scaled-up Olympic-style dinghy, offering a physical sailing experience that emphasizes sheet trim and hiking. Unlike the heavier, more stable "Hout Bay" cruising designs Nebe produced later, the Windy 580 feels light on the helm, providing immediate feedback that makes it an excellent platform for sailors looking to sharpen their technical skills.

Known Issues & Buyer’s Checklist

Prospective buyers of a vintage Windy 580 should focus their inspection on the structural integrity of the GRP, as many of these vessels saw heavy use in club racing environments.

  1. Mast Step and Compression: Given the rig loads required for competitive sailing, the area around the mast step should be inspected for stress fractures or signs of "sinking" into the deck or keel structure.
  2. Transom and Rudder Gudgeons: The high speeds achieved on a plane put significant stress on the rudder assembly. Look for hairline cracks in the gelcoat around the transom mounting points, which may indicate core fatigue.
  3. Centerboard Trunk: As a performance dinghy, the centerboard trunk is a high-load area. Inspect the internal trunk for leaks or signs of impact damage that could lead to water ingress into the buoyancy tanks.
  4. Rigging Fatigue: Many Windy 580s still carry older aluminum masts. Inspect all swage fittings and stay attachment points for "meat hooks" or corrosion, particularly if the boat has been stored near the coast.

Community & Resources

The Windy 580 was once a staple of the South African Yachting Association (now South African Sailing) circuit. While no longer a primary "pro" class, it maintains a nostalgic following in regional yacht clubs. Technical details and original design intent can often be confirmed through the Dudley Dix Yacht Design archives, as Dix remains an active figure in the global design community and continues to support his legacy designs.

The Verdict

The Windy 580 is a testament to the era when Nebe Boatworks and Dudley Dix were defining the South African maritime identity through speed and craftsmanship. It remains a compelling choice for sailors who value a "pure" sailing experience and are willing to maintain a vintage performance hull.

Pros

  • Exceptional speed and planing potential in moderate-to-heavy air.
  • Proven design pedigree from a world-renowned naval architect.
  • Strong, relatively simple GRP construction that is easy for a hobbyist to repair.

Cons

  • High physical demand; requires a coordinated three-person crew to sail effectively at the limit.
  • Limited availability outside of South Africa.
  • Older GRP hulls may require significant restoration of buoyancy tanks and core materials.

Measurements

Construction & Hull

Construction Material
Fiberglass
Hull Type
Monohull Sailboat
Keel Type
Wing
Rudder
1x —
Ballast
551 lbs
Displacement
1488 lbs
Water Capacity
-
Fuel Capacity
-

Dimensions

Length Overall (LOA)
19.03 ft
Waterline Length (LWL)
17.88 ft
Beam
7.48 ft
Draft
4.92 ft
Max Headroom
-
Air Draft
-
Hover over a measurement
IJPE FS LOALWL

Rig & Sails

Rig Type
Fractional Sloop
P (Main Luff)
-
E (Main Foot)
-
I (Foretriangle Height)
-
J (Foretriangle Base)
-
Forestay Length (est)
-
Sail Area
186 sqft

Calculations

Sail Area / Displacement (SA/D) Ratio
22.83
Ballast / Displacement Ratio
37.03
Displacement / Length Ratio (D/L) Ratio
116.21
Comfort Ratio
8.64
Capsize Screening Formula
2.62
Hull Speed
5.67 kn