Mason 33 Information, Review, Specs

Sailing Performance & Handling

Under sail, the Mason 33 exhibits the stable, predictable characteristics of a traditional heavy-displacement hull. With a displacement of approximately 14,000 pounds and a ballast-to-displacement ratio near 40%, the vessel is remarkably stiff, allowing it to carry full sail longer than lighter contemporary designs. The Al Mason-designed hull features a long keel that provides exceptional directional stability, making the boat easy to balance and a candidate for long stretches of self-steering, whether by wind vane or autopilot.

While the boat is not a light-air performer—owing to its significant wetted surface area—it excels when the breeze freshens. According to historical technical summaries from Cruising World, the Mason series is noted for a comfortable motion in a seaway, avoiding the jerky "hobby-horsing" often found in shorter, flatter-bottomed boats. The sloop or optional cutter rig provides enough sail area to move the hull efficiently in 10-15 knots of breeze, though owners often suggest that the boat truly "wakes up" once the wind exceeds 18 knots. The cutaway forefoot improves tacking performance compared to a full-length keel, though it still requires a definitive hand at the helm during low-speed maneuvers in tight marinas.

Interior Comfort & Variations

The interior of the Mason 33 is a showcase of the Ta Shing yard's legendary woodworking capabilities. Upon descending the companionway, the use of hand-joined solid teak and high-quality veneers is immediately apparent. The layout is traditional yet functional for long-term living: a forward V-berth provides the primary sleeping quarters, followed by a head with a shower to port and a hanging locker to starboard. The main salon features a U-shaped settee to port, which can often be converted into a double berth, and a straight settee to starboard.

A defining feature of the Mason 33 compared to other 33-footers is its nearly 11-foot beam, which allows for a surprisingly spacious galley and a dedicated navigation station. The galley is typically situated at the base of the companionway, offering safety for the cook while underway. Variations in the interior are few, as Ta Shing maintained a consistent standard, though some hulls were fitted with customized storage solutions or varied upholstery. The boat’s siblings, such as the Mason 43 and the Mason 53, utilize this same design language but expand on it with dedicated aft cabins and multiple heads. In the 33, the focus remains on providing a comfortable, secure environment for a couple.

Known Issues & Buyer’s Checklist

Prospective buyers of a Mason 33 should prioritize a rigorous inspection of several age-related technical areas common to Ta Shing builds of the 1980s.

1. Chainplates: The stainless steel chainplates are known to be a "gotcha" on older Masons. Because they are often glassed in or hidden behind beautiful cabinetry, inspection is difficult. Owners on technical forums frequently report crevice corrosion where the plates pass through the deck, which can lead to catastrophic rig failure if left unaddressed.
2. Teak Decks: Many Mason 33s were delivered with teak-over-fiberglass decks. Over decades, the thousands of screws securing the teak can allow water to penetrate the balsa or plywood core. A moisture meter and "percussion testing" (tapping with a hammer) are essential to ensure the core remains dry and structural.
3. Fuel and Water Tanks: The original fuel tanks were often constructed of black iron, which is prone to internal scaling and external corrosion if exposed to bilge water. Replacing these tanks is a major undertaking that usually requires removing sections of the cabin sole or engine.
4. Portlight Leaks: The bronze-framed portlights are high-quality, but the seals and the bedding compound between the frame and the cabin trunk often fail with age, leading to interior wood damage.

Community & Resources

The Mason 33 benefits from a dedicated and knowledgeable owner community. The primary hub for technical data, original brochures, and refit advice is the Mason Owners Association. While the group operates largely through private mailing lists and community forums, it remains the most authoritative source for verifying hull numbers and design modifications. Because Ta Shing also built the Baba and Tashiba lines (designed by Robert Perry), there is significant cross-pollination of technical knowledge between these groups regarding the maintenance of Taiwan-built yachts of this era.

The Verdict

The Mason 33 is a quintessential bluewater cruiser for the sailor who values traditional craftsmanship and seaworthiness over modern speed and interior volume. It remains one of the few vessels in the 30-foot range that can be realistically prepared for a circumnavigation without compromising structural integrity.

Pros:

• Exceptional Build Quality: Constructed by Ta Shing, arguably the finest production yard in Taiwan's history.
• Seaworthy Motion: The heavy displacement and Al Mason lines provide a safe, comfortable ride in heavy weather.
• Timeless Aesthetics: The combination of bronze hardware and extensive teak ensures the boat remains a head-turner in any harbor.

Cons:

• Maintenance Intensive: The abundance of exterior teak and aging systems requires a dedicated owner or a significant maintenance budget.
• Heavy Air Dependency: The boat can be sluggish in light winds and may require frequent motoring in regions with inconsistent breezes.
• Complex Tankage Issues: Replacing original iron tanks is a labor-intensive and expensive project.