Allegro 27 Information, Review, Specs

Sailing Performance & Handling

The Allegro 27 is characterized by its heavy displacement and high ballast ratio, which translate to a stiff, sea-kindly motion in rough water. With a displacement of roughly 3,000 kg (6,600 lbs) and nearly half of that weight concentrated in the lead ballast of its encapsulated long keel, the boat handles heavy weather with a composure rarely found in modern light-displacement hulls. It is not a light-air performer; the moderate sail area and significant wetted surface mean it requires a decent breeze to find its stride. However, once moving, the boat tracks exceptionally well, a trait often cited in technical discussions by the Allegroklubben, the primary Swedish owner association.

Under sail, the Allegro 27 exhibits a balanced helm, particularly when the jib is properly reefed in conjunction with the main. Its "Koster" heritage ensures that it does not hobby-horse in a chop, and the pointed stern prevents the following seas from pushing the boat off course, a common issue with wider-transomed designs. While it lacks the pointing ability of a fin-keel racer, its ability to maintain speed through waves makes it an efficient passage-maker for sailors who prioritize safety and comfort over raw speed.

Interior Comfort & Variations

Despite its compact dimensions, the interior of the Allegro 27 is remarkably functional, benefiting from a beam of 2.76 meters that remains relatively constant through the midsection. The layout typically features a traditional V-berth forward, followed by a small head compartment and a main salon with two longitudinal settees. The galley is generally located near the companionway for ventilation and ease of use while underway.

Because many Allegro 27s were sold as "half-fabrikat" (hull and deck assemblies completed by the yard with the interior finished by the owner), the quality of the cabinetry and the specific layout of the lockers can vary significantly between individual boats. Higher-end factory finishes often utilized mahogany or teak joinery, while amateur finishes may range from professional-grade craftsmanship to more utilitarian plywood arrangements. The sibling models, the Allegro 30 and the larger Allegro 33, offer more substantial headroom and dedicated chart tables, but the 27 remains the most sought-after for those seeking a solo-circumnavigation-capable vessel on a budget.

Popular Mentions & Media

The Allegro 27 has earned a cult following in Northern Europe, largely due to its proven track record in long-distance voyaging. Several Allegro 27s have completed circumnavigations or crossed the Atlantic, solidifying its status as a "pocket blue-water cruiser." It is frequently discussed in Swedish sailing literature as the benchmark for a safe family cruiser. The designer, Lars-Olof Norlin, is a celebrated figure in Scandinavian naval architecture, and his Allegro series is often compared favorably to other iconic designs like the Monsun 31 or the Contessa 26 in terms of seaworthiness.

Known Issues & Buyer’s Checklist

When inspecting an Allegro 27, prospective buyers should focus on the following technical areas commonly discussed in owner forums and technical wikis:

• Rudder Assembly: The rudder is hung on the trailing edge of the keel. Over decades, the stainless steel pintles and gudgeons can experience wear or galvanic corrosion. Any excessive play in the tiller should be investigated.
• Engine Replacement: Most original units were equipped with Volvo Penta MD1 or MD2 engines. Many of these have reached the end of their service life. Buyers should check if the engine has been repowered with a modern diesel, as the engine compartment is tight and replacement can be labor-intensive.
• Deck Core Integrity: While the hulls are solid fiberglass, the decks are sandwich-constructed. Check for soft spots around stanchion bases and the mast step, which may indicate water ingress into the core material.
• Window Seals: The original aluminum-framed or rubber-gasket windows are prone to leaking after 40+ years. Evidence of water staining on the interior cabinetry below the ports is a common "gotcha" for this model.

Community & Resources

The most authoritative resource for this model is the Allegroklubben, which maintains a technical archive of original drawings, tuning guides, and a register of known hulls. Though the site is primarily in Swedish, it is the definitive source for technical support and community events for Allegro owners across Europe.

The Verdict

The Allegro 27 is an overbuilt, traditional cruiser that prioritizes structural integrity and sea-kindliness over modern interior volume and racing performance. It is an ideal choice for the sailor who values the peace of mind that comes from a double-ended hull and a long keel.

Pros:

• Exceptional seaworthiness and stability for its size.
• Strong, thick GRP hull construction with encapsulated ballast.
• Timeless "Koster" aesthetics that attract attention in any marina.
• Strong resale value within the Scandinavian market.

Cons:

• Sluggish performance in light winds (under 10 knots).
• Limited interior headroom for taller sailors.
• Varying quality of interior finish due to kit-build history.
• Difficult to maneuver in tight marinas under power due to the long keel.