Sirius 26 Sailboat Review, Specs, and Listings

Design and Construction

The Sirius 26 sits at 7.9 meters overall with a 2.75-meter beam and a 6.1-meter waterline, proportions that yield a length-to-beam ratio of 2.87 and a displacement-length ratio of 258 — a moderately heavy small boat that carries its volume low and wide. Ballast runs to 920 kilograms against roughly 2100 kilograms displacement, a 44 percent ballast ratio that explains the reported stiffness through a normal heel angle. The hull and deck are fiberglass, with a balsa-cored deck over a solid hull, and the boat was offered in fixed fin and swing-keel forms; the fin version draws about 1.25 meters, while the swing keel ranges from 0.75 meters up to 1.32 meters, letting owners trade deep-keel stability for trailer-friendly shallows. Around 1980 the deck was revised and the coach roof extended forward with a more traditional squared-off appearance, and of the total build, 20 boats were completed with a wood coach roof and teak decks rather than the standard molded cabin.

Rig and Handling

As a masthead sloop the Sirius 26 carries a reference sail area that gives it a sail-area-to-displacement ratio of 16.1, rising to 19.4 with a 135 percent genoa, and period analysis placed its rig among the more powerful setups in its size class. A tall rig was also offered for owners wanting more canvas. The boat will usually heel to about 25 degrees but develops a very strong weather helm at that angle, a trait that rewards early reefing rather than carrying full sail into a brisk breeze. On a beam reach in excellent condition it can average almost 6 knots, close to the theoretical displacement-hull maximum of 6.0 knots for its length, and the capsize screening value of 2.17 meant it would not have been accepted in ocean races — a coastal and lake boat by temperament, not a globe-circler.

Accommodations

Below, the interior is finished in teak much like other small cruisers of its era, a warm but conventional approach to the 26-foot envelope. The 49-liter water tank and modest stowage reflect the boat’s day-and-weekend scope rather than long independent cruising, and the squared-off 1980 coach-roof revision added a more traditional cabin profile without changing the underlying footprint. The swing-keel option in particular made the design attractive to trailer sailors who wanted a real keelboat that could be dried out or stored ashore easily.

Known Issues

The iron fin keel is a point of long-term watch: unlike lead, iron keels are prone to rust and coating failure where they meet the hull flange, and any Sirius 26 with the fixed fin should be checked for keel-to-hull joint corrosion and stray-current leakage through fastenings. The balsa-cored deck is another area where water intrusion can rot the core; the 20 wood-coach-roof boats with teak decks carry additional exposure at seam and fastener lines. That pronounced helm load when well heeled is a handling characteristic rather than a defect, but it does mean an unprepared helm can be overpowered quickly in a gust.

Refits and Ownership

Owners have modernized the boat where it counts. One reported refit replaced the original Parat 18 winches with Andersen 28St units, which the owner found a very good fit and a meaningful upgrade for genoa handling. Engine choices varied across the build, with Farymann or Bukh diesels noted and later installations including Volvo Penta and Beta Marine power through shaft drives, so a buyer’s particular hull may differ sharply from the next in propulsion as well as keel type.

The Verdict

The Sirius 26 is a sensible, beamy small cruiser with a real keelboat feel and a usable deck evolution that improved looks without upsetting the design. Its weight-to-length and ballast numbers give it composure in normal coastal conditions, and the swing-keel version opens shallow venues most 26-footers cannot reach. The iron keel and balsa deck demand inspection discipline, but the boat’s simplicity and 260-boat familiarity make spares and advice easy to find.

Pros