Sun 27 Information, Review, Specs

Sailing Performance & Handling

The Sun 27 is characterized by John Brandlmayr’s signature approach to hull geometry, featuring a moderate displacement and a fin keel that provides a balance between agility and tracking. Unlike the heavier, long-keeled cruisers Spencer was known for, the Sun 27 was designed to be more responsive in the lighter airs common during summer months in the Salish Sea.

Under sail, the boat is known for its predictable behavior and "sea-kindliness," a trait often noted in regional editorial reviews. The hull’s relatively high ballast-to-displacement ratio ensures that the vessel remains stiff in a breeze, a necessary feature for tackling the sudden squalls of the Strait of Georgia. According to historical technical summaries from the period, the Sun 27’s sail plan—typically a masthead sloop—provides enough power to drive through the heavy chop found at tidal gates. While it is not a pure racing machine, it gained a respectable reputation in club racing circuits due to its ability to point well and its forgiving nature when pushed.

Interior Comfort & Variations

Despite its modest 27-foot length, the Sun 27 offers a surprisingly voluminous interior, a result of Brandlmayr’s clever use of beam and cabin trunk height. The layout follows a classic cruiser configuration: a V-berth forward, a central salon with twin settees that double as berths, and a compact galley located near the companionway for optimal ventilation. The use of fiberglass liners significantly simplified maintenance, though early models often featured extensive teak trim that imparted a warmer, more traditional aesthetic than many of its contemporaries.

The Sun 27 saw a direct evolution in the Sun 28, a sibling model that utilized a very similar hull form but offered a slightly modified transom and expanded interior volume. The Sun 28 is often conflated with the 27 on the used market, but it is distinguished by its marginally longer waterline and updated galley arrangements. Some variants of the Sun 27 were also customized by owners during the "kit boat" era, meaning interior finishes can vary from professional-grade joinery to more utilitarian, amateur-completed layouts.

Known Issues & Buyer’s Checklist

When inspecting a Sun 27 today, prospective buyers should focus on several age-related technical areas typical of 1970s fiberglass construction:

• Deck Core Integrity: Like many vessels of this era, the Sun 27 utilizes a balsa-cored deck. Moisture ingress around stanchion bases, chainplates, or the mast step can lead to delamination. Soft spots on the coachroof are a high-signal indicator of required core replacement.
• Chainplate Leaks: The chainplates on the Sun series are known to require periodic re-bedding. Persistent leaks here can compromise the wooden bulkheads to which they are bolted, a structural concern that requires careful scrutiny.
• Engine Serviceability: Many Sun 27s were originally equipped with small inboard diesels, such as the Yanmar YSE or YSB series. These single-cylinder engines are reliable but parts are becoming increasingly scarce. Owners often opt for an outboard conversion on a transom bracket if the original engine fails.
• Rudder Bearings: The spade rudder configuration is generally robust, but wear in the bushings can lead to "play" or vibration in the helm, especially when under power.

Community & Resources

The primary hub for technical knowledge and historical documentation is the Spencer Yacht Owners Group (SYOG), a dedicated community that preserves the legacy of John Brandlmayr’s designs. While Spencer Boats Ltd. is no longer in operation, this group remains the most reliable source for original sail plans and rigging specifications. Technical discussions often center on the nuances of the SUN line’s transition from Specialty Yachts’ marketing to Spencer’s shop floor.

The Verdict

The Sun 27 is an enduring example of Canadian nautical engineering, offering a robust entry point for coastal cruising.

Pros:

• Build Quality: Constructed by Spencer Boats, a yard synonymous with structural integrity.
• Balanced Handling: Excellent manners in both light and heavy air, making it an ideal trainer for coastal passages.
• Interior Volume: Feels larger than its 27 feet, with sufficient headroom for most sailors.

Cons:

• Age-Related Maintenance: Potential for deck core issues and old engine reliability.
• Limited Production Run: Fewer units available compared to mass-market brands like Catalina or Hunter, making parts and specific advice harder to source.
• Outdated Systems: Many examples require significant electrical and plumbing overhauls to meet modern cruising standards.