Design Brief & Intent 2
Brewer's primary objective for the Rob Roy 23 was to engineer a seaworthy, trailer-friendly cruiser for a cruising couple or singlehanded sailor. Positioned as a direct alternative to the more boxy, high-freeboard pocket cruisers of the era, the Rob Roy 23 relies on elegance and simplicity. Its defining physical characteristic is its canoe stern, which slices clean water exits and minimizes resistance, paired with a substantial bowsprit and a stern bumpkin that stretch its overall length to 28.67 feet, while the actual length on deck remains a compact 22.67 feet.
Below the waterline, the design utilizes a shallow, long-run stub keel enclosing an L-shaped aluminum centerboard. This configuration keeps the centerboard trunk exceptionally small and neatly tucked away, ensuring it does not bisect the interior living space. On deck, Marine Concepts built the boat with an extensive complement of exterior teak, including robust toe rails, handrails, the bowsprit, and the bumpkin, which reinforces its classic cruising yacht persona. Below deck, the accommodation is cozy and highly traditional, featuring 48 inches of sitting headroom, rich wood joinery, a teak-and-holly sole, and bronze opening portlights. The compact galley is split and located forward—featuring a two-burner stove to port and a small sink to starboard—flanked by two straight settee berths in the main cabin and a marine toilet in the bow.
Variations & Configurations
While the hull and double-ended aesthetic remained consistent throughout the production run, Marine Concepts offered minor interior and rig configurations to suit individual owners. The primary cabin layout is the classic two-berth arrangement, which prioritizes space for the forward galley and head. However, a three-berth variation was produced, which wedged an angled single berth forward adjacent to the head, slightly compressing the galley layout but accommodating an extra crew member.
The standard sail plan is a fractional Gunter-rigged yawl. The mainmast is stepped in an aluminum tabernacle on deck, allowing it to be lowered easily by a single person for bridge clearance or trailering. The unstayed mizzen mast steps through the cockpit floor and sits far aft on the stern bumpkin, allowing the mizzen sail to assist in balancing the helm or acting as a riding sail at anchor. Some versions of the boat were built as gaff or sloop rigs, though the vast majority feature the classic yawl rig with its distinctive tanbark sails. Draft configuration remains uniform across the fleet: the shallow-draft centerboard keel draws a mere 1.5 feet with the board retracted, and extends to 4.25 feet when fully lowered, making the boat an exceptional gunkholer capable of being easily launched from a standard boat ramp.
Sailing Performance & Handling
The sailing performance of the Rob Roy 23 is highly influenced by its unique design ratios and hull shape. With a displacement-to-length ratio of 108.67, she is categorized as a light-displacement vessel, allowing her to easily slip through the water even in light air. This agility is further enhanced by a robust sail area-to-displacement ratio of 24.97, indicating a powerful sail-to-weight relationship that makes the boat exceptionally fast and responsive on a reach. At the helm, the boat behaves dynamically, translating small puffs of wind directly into forward acceleration.
However, the narrow 6.92-foot beam and relatively modest ballast-to-displacement ratio of 29.55 percent mean the Rob Roy 23 is a tender boat that heels quickly. This tenderness is reflected in its capsize screening ratio of 2.13, which sits slightly above the conservative cruising standard of 2.0. Consequently, active sail management and early reefing are essential. Fortunately, the yawl rig provides excellent versatility for shortening sail; dropping the mainsail entirely and sailing under jib and mizzen is a classic tactic used by owners to keep the boat balanced and upright when the wind begins to howl.
Upwind performance is her primary limitation. Due to the L-shaped centerboard and the high windage associated with a split rig, the boat does not point exceptionally close to the wind and can experience notable leeway. Off the wind and on a broad reach, however, she settles into a comfortable groove. A motion comfort ratio of 11.14 underscores her lively pocket-cruiser motion; while she will dance and react quickly in a seaway, her predictable double-ended hull helps ease the motion compared to flat-bottomed modern trailer-sailers.
Known Issues & Triage
Prospective buyers of a vintage Rob Roy 23 should watch for several model-specific issues. The most critical involves the internal ballast construction. In the early production models, Marine Concepts encapsulated the ballast by placing lead chunks on either side of the centerboard trunk and setting them in casting resin. Over decades of trailering—especially on rollers rather than bunks—the bouncing forces can cause this resin to fracture, leading to cracks in the fiberglass around the centerboard trunk or causing the internal ballast to shift. Inspecting this area for structural cracking, water intrusion, or loose material is a primary triage step.
The steering system and rudder are another known trouble area. The original design featured an aluminum spade rudder sheathed in fiberglass, or in some iterations, a kick-up rudder assembly 2. The internal rudder core can suffer from water ingress and subsequent delamination, which can cause the fiberglass skin to split or fail under load. Additionally, the kick-up rudder has been known to float up or lack enough negative buoyancy to stay fully deployed, reducing steering authority.
Lastly, the decks are constructed with an end-grain balsa core. Any poorly sealed or aftermarket deck hardware, handrails, or chainplate penetrations can allow moisture to penetrate the core, leading to localized rot and soft spots. Cruisers should systematically check the deck with a moisture meter, paying special attention to the areas around the deck-mounted tabernacle and the bowsprit attachment points.
Modernization & Upgrades
Owners who undertake refits on the Rob Roy 23 frequently target the auxiliary power. The boat features an in-cockpit engine well designed for an outboard motor up to 8 horsepower. Many vintage units originally ran old, noisy two-stroke outboards that were difficult to service. Modern refits typically involve installing a lightweight 6-horsepower or 8-horsepower four-stroke outboard with an alternator to charge the house batteries. Recently, some owners have successfully converted to electric propulsion, utilizing drop-in electric outboards which fit neatly into the well, eliminating the noise and smell of gasoline while capitalizing on the boat's easily-driven, light-displacement hull.
To address the floating rudder issue, owners often upgrade to a modern, weighted high-performance kick-up rudder. Custom rudder builders manufacture replacement foils that are properly weighted to remain down at speed, greatly improving responsiveness and helm control.
On the electrical and rigging fronts, standard modernization projects include replacing the traditional lead-acid batteries with a compact lithium iron phosphate battery bank, which pairs beautifully with small, flexible solar panels mounted on the cabin top or the stern rail. For singlehanded safety, owners routinely install a lazy jack system on the main mast and convert the halyards and reefing lines so they can be led aft to the cockpit, ensuring the crew rarely has to step onto the narrow side decks in rough weather.
Market Snapshot & Economics
On the brokerage market, the Rob Roy 23 holds a strong, niche standing as a classic pocket yacht. Because fewer than a hundred hulls were ever produced, they are relatively scarce and do not appear on the market with great frequency. When they do, they command a modest premium compared to mass-produced, utilitarian trailer-sailers of the same era, reflecting their high-quality fiberglass build, classic styling, and naval architect pedigree.
Refit economics for the Rob Roy 23 are highly favorable due to the boat's compact size. Replacing standing rigging, purchasing new sails, or performing cosmetic wood restorations can be accomplished at a fraction of the cost of a mid-sized cruising yacht. However, a major structural failure, such as a rotted balsa-core deck or a compromised centerboard trunk ballast, can easily exceed the baseline value of the vessel if outsourced to a professional yard. As a result, these boats are highly prized by competent do-it-yourselfers who can preserve the extensive brightwork and structural integrity of what is widely considered one of Ted Brewer’s most charming small-boat designs.
The Verdict 2
The Rob Roy 23 is a rare, beautifully proportioned, and highly capable pocket cruiser that appeals to the heart as much as the head. It is not designed to win around-the-buoys fleet races, nor is it intended for standing-height living at the dock. Instead, it serves as an elegant, trailerable gunkholer that can handle coastal hops, weekend explorations, and shallow bays with grace, safety, and an unmistakable nautical presence.
- Classic, head-turning canoe-stern yawl design with exceptional aesthetic appeal.
- Shallow draft with a minimally intrusive centerboard trunk, making it highly trailerable and capable of gunkholing.
- Easily managed yawl rig with a tabernacle-mounted mainmast for simple singlehanded setup and lowering.
- Light-displacement hull is highly responsive and performs beautifully on a reach.
- High-quality build construction by Marine Concepts, featuring robust fiberglass and extensive teak trim.
- Extremely limited interior space, with only sitting headroom and a narrow cabin sole.
- Tender in a breeze due to a narrow beam, requiring early and frequent reefing.
- Mediocre upwind sailing performance, experiencing notable leeway when pointing.
- Original ballast resin design is prone to cracking and failure if subjected to rough trailering.
- The original kick-up rudder can suffer from water intrusion and buoyancy issues.
