Delph 28 Information, Review, Specs

Sailing Performance & Handling

The Delph 28 is defined by a remarkably high ballast-to-displacement ratio, often cited between 50% and 56%, which provides exceptional stiffness and the ability to carry full sail longer than many of its contemporaries. This technical characteristic, interpreted by the editorial team at Voile & Moteur, results in a boat that "traces its route" at significant heel angles without losing its grip on the water. With a sail area-to-displacement ratio of approximately 20.5, the boat is a high-performer in light to moderate air, particularly on upwind beats where its deep fin keel and narrow IOR-influenced beam allow for tight pointing angles.

Handling is characterized by the responsiveness of a "large competition keelboat." However, the design carries the hallmarks of its era: a pinched stern and a relatively low-volume bow. In heavy weather, the bow tends to "bite" into the swell, leading to a wet deck, though the cockpit typically remains protected. The 7/8 fractional rig version is particularly prized for its tuning flexibility, though a masthead rig variant was also produced to suit different racing handicaps.

Interior Comfort & Variations

While the Delph 28 was built on a performance hull, Artecna utilized a raised deck section (a "teugue") to maximize interior volume without ruining the yacht's sleek profile. This design choice provides a headroom of approximately 1.78 meters (5'10"), which was generous for a 28-foot racing-oriented design of the 1970s. The layout is traditional, featuring a V-berth forward, a central salon with twin settees, a compact galley, and a dedicated navigation station.

The "Course-Croisière" (Cruiser-Racer) version is the most common, featuring functional woodwork—typically teak—and enough berths to accommodate a crew of five or six. In contrast, the rare "Sport" version prioritized weight savings and often lacked the full cabinetry found in the cruising variants. The Delph 28 was part of a broader family of Mauric designs built by Artecna, which included the smaller Delph 26 and the larger, more powerful Delph 32, both of which shared the characteristic "frégaté" (tumblehome) hull shape.

Popular Mentions & Media

The Delph 28 maintains a niche but active presence in the classic racing circuit. Notably, the Delph 28 named Insolent was a featured French entry in the 2024 Cowes Week, demonstrating the hull's enduring competitiveness in IRC-rated fleets. Additionally, the boat Agoué has a documented history of success in Caribbean regattas, including class wins noted in regional maritime journals like Caribbean Compass.

Known Issues & Buyer’s Checklist

Prospective buyers should approach the Delph 28 with a focus on its structural integrity and aging mechanical systems.

• Keel Attachment: Given its high ballast ratio and deep fin keel, the keel bolts and surrounding fiberglass reinforcement should be inspected for stress cracks or "smiles" at the leading edge, which may indicate a past grounding.
• Osmosis: Like many French hulls of the late 70s, the Delph 28 is susceptible to osmotic blistering. A moisture meter test on the hull below the waterline is essential.
• Original Engines: Many units were originally fitted with the Vire 7hp two-stroke gasoline engine or small Lombardini diesels. If the original engine remains, parts can be difficult to source, and many owners opt for a modern Yanmar or Beta Marine repower.
• Deck Core: The balsa-cored decks can develop soft spots around the chainplates and mast step if the sealant has failed over the decades.

Community & Resources

The primary community for the Delph 28 is centered in France, where it is celebrated as a classic "Mauric" design. Technical data and historical race results are meticulously maintained by the Half Ton Class Europe association and the Association des Propriétaires de Plans Mauric, which provides a repository for owners of André Mauric's various designs.

The Verdict

The Delph 28 is a "connoisseur’s boat" that offers the pedigree of a world-class designer and the sailing thrill of a vintage racer.

Pros

• Exceptional upwind performance and stiffness.
• Timeless aesthetic with a famous design pedigree.
• High build quality for a 1970s production boat.

Cons

• Wet ride in heavy seas due to low-volume bow.
• Relatively small interior compared to modern wide-beam cruisers.
• Frequent need for engine or rigging updates on older hulls.