The Corby 29 is a precision-engineered racing yacht designed by John Corby of Corby Yachts, a design house synonymous with IRC (International Rating Certificate) success. Developed as a successor to the highly acclaimed Corby 25, the 29 was conceived to offer a more offshore-capable platform while maintaining the signature narrow-beam, high-ballast-ratio philosophy that defines the Corby lineage. Unlike the "fat-stern" designs popularized by French offshore manufacturers, the Corby 29 focuses on minimizing wetted surface area and maximizing upwind "pointability," making it a specialist weapon for windward-leeward racing in tidal waters.
Corby 29 Information, Review, Specs
- Make
- Corby
- Model
- 29
- Builder
- —
- Designer
- Corby
- Number Built
- Production Year(s)
- 2007 - ??
Sailing Performance & Handling
The sailing characteristics of the Corby 29 are dominated by its high ballast-to-displacement ratio and its remarkably narrow waterline. Most hulls were built using strip-plank cedar and epoxy or high-end GRP foam sandwiches, ensuring a stiff, light structure that responds instantly to helm inputs. With a deep lead bulb keel drawing nearly 2 meters, the boat exhibits a "big boat" feel in terms of stability, allowing it to carry full sail long after its competitors have transitioned to smaller jibs.
On the water, the Corby 29 is known for its exceptional tracking. While modern wide-beam boats struggle with helm balance when heeled, the 29’s symmetrical hull form remains neutral, requiring minimal rudder angle even when pushed. According to designer notes and historical racing analysis from Corby Yachts, the boat was specifically optimized for IRC, where its narrow beam is rewarded with a favorable rating. Downwind, it is not a pure "planing" boat in the vein of a Melges 24; instead, it utilizes its waterline length to maintain high average speeds, staying remarkably composed in a seaway.
Interior Comfort & Variations
Consistent with its "Grand Prix" racing intentions, the interior of the Corby 29 is utilitarian and sparse. The layout is designed for a racing crew of five to six, featuring a minimalist arrangement that prioritizes weight distribution. The cabin typically offers four pipe cots or fixed berths, a basic galley area with a single-burner stove, and a centralized navigation station.
There is significant variation in finish between individual hulls, as many were completed as semi-custom projects. While the structural components are robust, the aesthetic is "industrial-chic," with exposed epoxy and carbon fiber often visible. Headroom is limited, as the low-profile coachroof is designed to minimize windage and keep the center of gravity low. The Corby 29 was built alongside siblings like the Corby 25, which is more of a day-racer, and the larger Corby 33 and 36 models, which offer more pressurized water systems and enclosed heads for offshore campaigning.
Popular Mentions & Media
The Corby 29 earned its reputation through consistent podium finishes in the UK and Ireland’s most competitive IRC fleets. Notable hulls such as Circus and Gringo became household names in the Cowes Week and Cork Week circuits. The model is frequently cited in technical discussions regarding IRC design evolution, representing a pinnacle of the "narrow and deep" design philosophy before the rule began to accommodate wider, chine-heavy hulls.
Known Issues & Buyer’s Checklist
Prospective buyers of a Corby 29 should approach the vessel as a high-performance machine that requires specialized maintenance.
- Keel Attachment: Given the massive leverage exerted by the deep lead bulb, the keel floors and internal grid must be inspected for any signs of stress cracking or "smile" movement at the hull-keel joint.
- Core Integrity: For epoxy/cedar builds, a moisture meter is essential. Any breach in the outer laminate can lead to localized rot in the cedar strips, which is a complex repair.
- Rigging Loads: The 29 often carries a high-tension fractional rig. Chainplates and mast steps should be checked for compression or deformation.
- Rudder Bearings: The high aspect ratio rudder is under significant load; play in the bearings is a common maintenance item that, if neglected, can degrade the boat's signature steering precision.
Community & Resources
Owners and fans of the brand typically congregate through the designer’s direct channels or regional IRC racing associations. The Corby Yachts website serves as the primary technical archive, offering historical design data and contact information for refit consultations. Technical support is often found within the Cowes-based racing community, where many of these boats were originally commissioned.
The Verdict
The Corby 29 is a purist’s racing yacht that trades interior luxury for surgical precision on the racecourse.
Pros:
- Elite upwind performance and pointing ability.
- Extremely stable and stiff due to a high ballast ratio.
- Timeless, aggressive aesthetic that stands out from mass-production designs.
- Favorable IRC rating that remains competitive decades after launch.
Cons:
- Minimalist interior with zero "cruising" comforts.
- Deep draft limits access to some shallow harbors and marinas.
- Sensitive to crew weight and trim; requires an active, skilled team to reach target speeds.
Measurements
Construction & Hull
- Construction Material
- Fiberglass
- Hull Type
- Monohull Sailboat
- Keel Type
- Bulb
- Rudder
- 1x Spade
- Ballast
- 3520 lbs (Lead)
- Displacement
- 6875 lbs
- Water Capacity
- -
- Fuel Capacity
- -
Dimensions
- Length Overall (LOA)
- 29 ft
- Waterline Length (LWL)
- 25.3 ft
- Beam
- 9.4 ft
- Draft
- 6.5 ft
- Max Headroom
- -
- Air Draft
- -
Rig & Sails
- Rig Type
- Masthead Sloop
- P (Main Luff)
- 38.4 ft
- E (Main Foot)
- 13 ft
- I (Foretriangle Height)
- 12 ft
- J (Foretriangle Base)
- 40.6 ft
- Forestay Length (est)
- 42.34 ft
- Sail Area
- 493 sqft
Calculations
- Sail Area / Displacement (SA/D) Ratio
- 21.81
- Ballast / Displacement Ratio
- 51.2
- Displacement / Length Ratio (D/L) Ratio
- 189.52
- Comfort Ratio
- 20.34
- Capsize Screening Formula
- 1.98
- Hull Speed
- 6.74 kn