Delph 28 Sailboat Review, Specs, and Listings

Design Brief & Intent 2

The core mission of the Delph 28 was to deliver maximum upwind performance and heavy-weather stability under the prevailing handicap guidelines. This is reflected in an interior that, while categorized as habitable, is unapologetically sparse and narrow by modern standards. With a beam of just under nine feet, the accommodation space is built for functionality at sea rather than marina dockside entertaining. Artecna offered the boat in several distinct finish variations, ranging from a bare-bones "Sport" or "Race" layout to more finished "Weekend," "Cruiser," and "Race-Cruiser" trims.

Regardless of the trim level, the interior joinery features simple, light marine plywood and laminates intended to keep the vessel's displacement as close to its racing target as possible. The cabin offers a modest headroom of approximately five feet, ten inches, which is respectable for a boat of this length but quickly feels constrained due to the narrow waterlines and tapering hull. Stowage is functional, designed primarily to keep sails and wet gear secure during long offshore beats, marking this as a vessel for the dedicated purist who values mechanical and architectural integrity over domestic comfort.

Variations & Configurations

While the hull and its deep fin keel remained uniform throughout the production run, Artecna offered buyers two distinct rigging configurations that radically changed the boat's handling characteristics. The standard cruiser variation was fitted with a conservative masthead sloop rig, but the highly sought-after racing configuration featured a dynamic fractional 7/8 rig. The fractional option gave helmsmen significantly more control over mast bend and mainsail shape, making it the preferred setup for competitive regional racing in the Mediterranean and the English Channel. Underneath, a deep, highly swept-back fin keel paired with a balanced spade rudder provided the directional control needed to keep the boat tracking through a chop. The boat was originally equipped with small inboard diesels or sail-drives—frequently Lombardini or Volvo Penta units—which were tucked tightly under the companionway steps to keep weight concentrated near the center of buoyancy.

Sailing Performance & Handling

On the water, the Delph 28 behaves like a thoroughbred. With a ballast-to-displacement ratio of exactly fifty percent, the boat carries 2,866 pounds of its 5,732-pound total weight in its keel. This makes the Delph 28 exceptionally stiff and stable, allowing it to carry its canvas long after competitors of similar size are forced to reef. The boat’s performance ratios tell a clear story of its sailing dynamics. A displacement-to-length ratio of 211.14 classifies it as a moderate-weight design, providing enough momentum to punch through a head sea without being stopped dead by waves. When combined with a potent sail area-to-displacement ratio of 20.48, the fractional rig comes alive in light-to-moderate air, showing remarkable acceleration and an upwind pointing ability that remains the envy of many modern cruising designs.

However, this upwind prowess comes at a physical price. The low freeboard design means the deck is notoriously wet; in heavy air and a chop, waves sweep back along the deck, demanding high-quality foul weather gear. Downwind, the boat's classic IOR shape—featuring pinched ends and a wider midsection—can make it prone to rolling under a spinnaker in a heavy blow, requiring an active and experienced hand on the tiller. The capsize screening ratio of 2.01 indicates a vessel that is right on the boundary line for offshore rating rules of its era, while its comfort ratio of 19.38 guarantees a lively, responsive motion that communicates the sea's state directly to the helm.

Known Issues & Triage

For those looking to acquire or restore a Delph 28, the primary structural concern centers around the keel-to-hull joint. Due to the highly swept-back profile of the fin keel, the joint is subject to extreme leverage forces, particularly if the vessel has ever suffered a grounding or was improperly supported on the hard. When stored on cradle stands, the boat has a natural tendency to pivot forward, which can strain the aft section of the keel sump. Buyers must inspect the floorboards and internal grid structure for stress cracking, structural delamination, or water infiltration around the keel backing plates.

Another area of critical concern is the deck construction. Artecna utilized a balsa-core laminate for the decks to save weight. Over five decades of exposure, water ingress through neglected, poorly sealed deck hardware—such as stanchion bases, chainplates, and tracks—often results in localized balsa rot and soft spots. Triage typically requires drilling test holes, drying or excavating the damaged core, and injecting epoxy or rebuilding sections of the deck from underneath. Finally, because the high-ballast ratio allows the boat to be sailed hard in heavy conditions, the chainplates and the mast step area are subject to high fatigue cycles and must be systematically inspected for micro-cracking and deformation.

Modernization & Upgrades

Given the vintage of the Delph 28, successful modernizations generally focus on electrical simplification and auxiliary power updates. The original Lombardini engines, if still present, are often at the end of their serviceable lives. Many owners choose to repower with lightweight, reliable two- or three-cylinder diesels, such as those from Beta Marine, which fit well within the compact engine compartment. Alternatively, because of the boat’s modest displacement and its primary use as a daysailer or club racer, some owners have successfully converted these hulls to electric propulsion, which eliminates the maintenance and plumbing of a diesel altogether.

On deck, replacing the original, undersized winch package with modern self-tailing winches and running all halyards and reefing lines aft to the cockpit significantly improves single-handed ease of handling and safety. In terms of house systems, the trend is toward minimalist 12-volt systems powered by a small lithium iron phosphate battery bank, which provides plenty of capacity for modern LED lighting, VHF, and basic navigation instruments without adding unnecessary weight to the stern.

The Verdict

The Delph 28 is a beautifully styled, high-performance historical artifact from one of the most exciting eras of French yacht design. While it cannot compete with modern 28-footers in terms of interior volume, standing headroom, or downwind ease, it remains an incredibly rewarding boat for the pure sailor who loves the thrill of beating upwind and values a stiff, seaworthy design.

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