Can Sirius Information, Review, Specs

Sailing Performance & Handling

The Sirius 21 is a versatile performer characterized by its swing-keel configuration, which allows for a minimum draft of just 1.5 feet, making it an ideal candidate for gunkholing and beaching. When the heavy cast-iron keel is lowered to its full 5-foot depth, the boat gains significant stability and tracking ability. According to an editorial review in Canadian Yachting, the 21-foot model is surprisingly stiff for its size, thanks in part to its nearly 8-foot beam, which provides a high degree of form stability.

Handling is generally described as forgiving, making it a popular choice for novice sailors. The boat’s displacement-to-length ratio suggests a hull that is more of a sturdy cruiser than a light-air racer, yet it remains responsive in moderate breezes. For those seeking more blue-water capability, the Sirius 28 was offered with either a fixed fin keel or a shallow-draft wing keel. As noted in a technical evaluation of the Sirius 28 by Canadian Yachting, the larger model provides a much more "big boat" feel, with better momentum through heavy chop and improved upwind performance compared to the trailerable 21.

Interior Comfort & Variations

The hallmark of the Sirius 21’s interior is its "pop-top" coachroof. This feature allows for standing headroom in the main cabin while at anchor—a rare luxury for a boat under 22 feet. The layout typically includes a V-berth forward, a small galley area, and a dinette that converts into an additional berth. The use of a full interior fiberglass liner (hull liner) gives the cabin a clean, finished appearance while adding structural rigidity, though it can make accessing the hull for repairs more difficult.

The Sirius 28 scales this comfort up significantly, offering a genuine aft-cabin layout that was quite innovative for a 28-foot boat in the 1980s. The 28 features an enclosed head with a shower, a full galley with a two-burner stove, and a much more substantial teak-trimmed interior. While the 21 was built for weekends, the 28 was clearly intended for extended coastal cruising, with significantly more storage and larger tankage for water and fuel.

Known Issues & Buyer’s Checklist

Prospective buyers should focus on several specific areas that are common to the Sirius line:

• Swing Keel Mechanism: On the Sirius 21, the pivot pin and the lift cable are critical wear points. Owners often report that the keel can "clunk" if the side bushings are worn, and the cable should be inspected for fraying or corrosion at the winch.
• Deck Core Integrity: Like many boats of this era, the Sirius used a balsa-cored deck. Soft spots are frequently found around the chainplates, stanchion bases, and the pop-top hinges. A thorough moisture meter test is recommended in these areas.
• Pop-Top Gasket: The rubber seal that keeps the pop-top watertight when lowered often degrades over time. Replacing this seal is essential to prevent cabin leaks during heavy rain or when taking spray over the bow.
• Compression Post: Ensure the deck stepped mast is properly supported by the internal compression post. On some older 21s, the load can cause slight deformation in the cabin sole or deck if the support has shifted or the core underneath has compressed.

Community & Resources

The Sirius community remains active, particularly in the Great Lakes region and Western Canada. The Sirius 21 Owners Association has historically been the primary hub for technical drawings, parts sourcing, and modification ideas, such as rudder upgrades or keel maintenance guides. While no longer a formal corporate entity, technical support is frequently shared through regional sailing clubs that host "Sirius-only" regattas or cruises.

The Verdict

The Sirius series remains a high-value entry point for sailors who demand versatility and clever engineering.

Pros:

• Excellent trailerability and shallow draft (21 model).
• Standing headroom achieved via the innovative pop-top.
• Solid Canadian construction designed for "real world" conditions.
• Strong secondary market with an active community of owners.

Cons:

• The pop-top can be cumbersome to operate alone and may leak if not maintained.
• Swing keel maintenance is more intensive than a fixed-keel equivalent.
• Cockpit space on the 21 is somewhat cramped when sailing with more than three adults.