Irwin 27 Information, Review, Specs

Sailing Performance & Handling

The Irwin 27 was primarily designed with a shoal-draft keel/centerboard configuration, a hallmark of Ted Irwin’s Florida-influenced designs. With the board up, the boat draws only 2’8”, allowing it to navigate thin waters that would be off-limits to most fixed-keel vessels of its size. When the centerboard is lowered to its full 6’6” depth, it provides the lateral resistance needed for respectable upwind performance. According to archival technical specs found on the Irwin Yachts historical site, the boat carries a moderate sail area-to-displacement ratio that favors light-to-moderate air, making it a capable performer in the typical afternoon breezes of the East Coast.

While not a pure racing machine by modern standards, the hull's generous beam provides good initial stability. However, owners frequently note that the boat reaches its hull speed quickly and benefits from early reefing to maintain an upright, efficient posture. The spade rudder offers responsive steering, though it can feel "heavy" if the boat is over-canvassed. In heavy weather, the motion is somewhat livelier than a heavy-displacement full-keel boat, but its ability to track remains reliable provided the centerboard is properly adjusted for the point of sail.

Interior Comfort & Variations

For a 27-foot boat designed in the late 1960s, the interior volume of the Irwin 27 was revolutionary. It offers a "big boat" feel, featuring a layout that includes a forward V-berth, a private head compartment, and a main salon with facing settees. The galley is typically located aft near the companionway for ventilation and ease of access to the cockpit.

The model evolved through three distinct versions. The original Irwin 27 (Mark I) featured a more traditional trunk cabin, while the later Mark II and Mark III (often referred to as the 27-3) introduced styling changes and subtle modifications to the deck mold to increase headroom. In the Mark II and III versions, the interior was refined with more extensive teak joinery and improved stowage. The Irwin 27 is frequently confused with the later Irwin Citation 27, but the Citation was a entirely different hull design—narrower and more performance-oriented—built to compete with the emerging IOR-influenced designs of the late 1970s. For those seeking the maximum "living room" on a 27-foot footprint, the original keel/centerboard hull remains the preferred choice.

Known Issues & Buyer’s Checklist

Prospective buyers should approach an Irwin 27 with an eye toward structural aging, as many of these vessels are now entering their sixth decade of service.

• Centerboard Assembly: The most critical inspection point is the centerboard trunk and the stainless steel or galvanized cable (pennant). Over time, the pivot pin can wear, or the board can swell, leading to a jammed mechanism. Replacing the cable and inspecting the winch is a mandatory maintenance task.
• Mast Step and Compression: Like many boats of this era, the Irwin 27 utilizes a deck-stepped mast supported by an internal compression post. If water has intruded into the deck core around the mast step, the deck can compress, leading to rig tension issues and structural instability.
• Portlights and Deck Leaks: The original plastic-framed portlights are notorious for developing leaks, which can damage the interior bulkheads. Buyers should check for "soft spots" in the balsa-cored decks, particularly around the chainplates and stanchion bases.
• Rudder Post Play: The spade rudder is supported by a fiberglass tube that can develop stress cracks or play in the bearings. Any significant "clunking" while underway or visible weeping around the rudder post inside the lazarette warrants a professional survey.

Community & Resources

The primary hub for technical data and historical documentation is the Irwin Yachts resource page, which maintains a repository of original brochures and manual scans for the 27 and its siblings. Additionally, because Ted Irwin was based in St. Petersburg, Florida, many regional sailing clubs along the Gulf Coast maintain informal registries and archives dedicated to the brand’s early production models.

The Verdict

The Irwin 27 is a quintessential starter cruiser that offers an impressive amount of living space for its length and price point. It remains one of the most affordable ways to gain a shallow-draft coastal cruiser capable of weekend "gunkholing."

Pros:

• Extremely shallow draft (with board up) is ideal for coastal exploration and easy trailering/launching.
• Exceptional interior volume and headroom for a sub-30-foot vintage boat.
• Active secondary market ensures parts and "donor" boats are relatively easy to find.

Cons:

• The centerboard system adds a layer of mechanical complexity and maintenance.
• Older hulls are prone to deck core saturation and mast step compression.
• Light-duty hardware may require upgrading for those intending to sail in more exposed waters.