Ajax 28 Information, Review, Specs

Sailing Performance & Handling

The Ajax 28 is defined by the design hallmarks of the Elvstrøm-Kjærulff office: a relatively narrow entry, a deep fin keel, and a skeg-hung rudder that provides a level of tracking stability often missing in modern spade-rudder designs. Because it was designed to the Half Ton class limit, the hull features the characteristic IOR "tumblehome"—a widening of the beam at the waterline that narrows toward the deck—which contributes to its initial tenderness but significant secondary stability when pressed.

Under sail, the boat is known for its agility in light airs, thanks to a high aspect rig and a generous sail area-to-displacement ratio that allows it to ghost along when heavier cruisers are forced to engine. Owners frequently report that the boat "comes alive" in 10–12 knots of breeze, finding a natural groove upwind. However, like many designs of its generation, it requires active trimming; the large overlapping genoa, common for the period, makes the boat a powerhouse on a reach but demands physical effort during frequent tacking. Downwind, the Ajax 28 is stable but can exhibit the rhythmic "rolling" common to IOR hulls if over-canvassed in heavy following seas.

Interior Comfort & Variations

The interior of the Ajax 28 reflects a pragmatic, sea-going philosophy where safety at sea takes precedence over "condo-style" volume. The layout typically features a classic five-berth configuration: a double V-berth forward, two settee berths in the main saloon, and a generous quarter berth to starboard, tucked behind the navigation station. The use of warm teak joinery was standard, creating a cozy, traditional atmosphere that contrasts with the fiberglass-heavy interiors of contemporary production boats.

Headroom is functional but modest, averaging around 5'9" (1.75m), which may feel cramped for taller sailors but is consistent with the boat's low-profile, aerodynamic coachroof. The galley is generally located to port and is designed for use while underway, featuring deep sinks and secure bracing points. The Ajax 28 shares its hull mold with the Bianca 28, though the latter was often finished with a higher level of factory luxury and slightly different deck moldings. While the Ajax was sometimes sold as a "finishing kit" or a more utilitarian version, the structural components—the hand-laid GRP hull and the deck-to-hull joint—remain identical in quality to the Bianca-branded hulls.

Known Issues & Buyer’s Checklist

Prospective buyers should approach an Ajax 28 with a focus on age-related maintenance common to 40-year-old performance boats.

• Deck Delamination: Like many Scandinavian boats of this era, the Ajax 28 utilizes a balsa-cored deck. Buyers should use a phenolic hammer to check for "dead" thuds around the chainplates, stanchion bases, and the mast step, as moisture ingress in these areas can lead to costly core rot.
• Original Powerplants: Many units were originally fitted with the Bukh DV10 or Volvo Penta MD7A. While these are legendary "lifeboat" engines, parts are becoming increasingly scarce and expensive. A boat that has been repowered with a modern Yanmar or Beta Marine diesel carries a significant value premium.
• Keel-to-Hull Joint: The cast iron keel is bolted to a reinforced GRP sump. Check for the "smile" at the leading edge of the keel-hull join, which can indicate either loose keel bolts or a history of hard groundings.
• Rudder Play: The skeg-hung rudder is robust, but the bushings at the top and bottom of the post can wear over decades. Significant "play" or vibration while motoring indicates a need for bushing replacement.

Community & Resources

The primary hub for technical support is the Bianca Owners Association, which welcomes Ajax 28 owners due to the near-total overlap in parts, rigging specifications, and historical data. Because these boats were primarily distributed in Northern Europe, much of the best technical documentation remains in Danish or German, though the international Elvstrøm design community is active on various classic yacht forums.

The Verdict

The Ajax 28 is an elegant, fast, and seaworthy classic that offers a level of build quality rarely seen in the entry-level used market. It is an ideal choice for a couple or a small family who views sailing as a sport rather than just a means of transport.

Pros

• Exceptional light-wind performance and pointing ability.
• Robust Scandinavian build quality with high-grade GRP layup.
• Timeless, sleek aesthetics that stand out among modern "bulbous" cruisers.

Cons

• Restricted headroom and interior volume compared to modern 28-footers.
• Large overlapping genoas can be physically demanding for solo sailors.
• The age of original systems (wiring, plumbing, and engines) necessitates a thorough survey.