Ta Shing Yacht Service in Taiwan built every Mason 43 under close supervision by Pacific Asian, which retained ownership of the molds and oversaw every construction detail. That relationship transformed Ta Shing from a fishing-boat builder into one of the finest yards in the world, a claim borne out by the other hulls that emerged from the same facility: the Noreman 447, Baba 40, and Taswell line.
Hull and Construction
The Mason 43's structural philosophy is blunt: build it thick and build it solid. The solid glass laminate exceeds an inch in thickness at the keel crown and maintains a half-inch to the gunwale, laid up in the conventional hand-lamination method that was standard before vacuum-bagging or SCRIMP resin infusion. Earlier hulls used polyester resin; later production shifted to vinylester for improved blister resistance.
The lead ballast is encapsulated within the keel rather than bolted on externally. That choice means a head-on collision with a coral head or submerged rock will not risk hull damage or leaks — a meaningful distinction for a boat intended for extended blue-water work. The hull-to-deck joint on older boats uses a bedded fiberglass flange with full-length stainless-steel straps, through which the teak toe rail and genoa tracks are bolted. Observers who watched a Mason 43 absorb a broadside hit from a steel harbor tug reported that the joint's integrity was not compromised.
Where the construction earns criticism is the deck core. Older boats use marine plywood, and where teak decking was screwed over the fiberglass, those screws penetrate the core. Moisture infiltration over decades can leave punky areas that require resin infusion and re-fastening, though this is a maintenance task rather than a structural condemnation. Similarly, early interior furniture was often built in over plumbing and wiring, complicating any future troubleshooting or modification.
Rig and Handling Under Sail
The Mason 43 was offered in two configurations: a cutter and a staysail ketch. The ketch version is particularly popular among shorthanded couples because it divides the sail plan into smaller, more manageable portions that can be balanced across a wider range of conditions. The cutter carries 899 square feet; the ketch adds a mizzen and its associated staysail, which the review literature identifies as a great cruising sail any member of the crew can handle.
Performance is honest rather than exciting. The boat will hold 6.5 knots in steady trade-wind conditions, drop to 5.5 in variable going, and average 6.1 knots to windward in breezes between 8 and 25 knots. The 150-mile day is achievable without strain; the 200-mile day is not on the menu. Going to windward, the waterline lengthens as she heels, and like most CCA-era designs, the boat is happiest at 15 degrees of heel and should be reefed accordingly. In a short steep chop, the long overhangs can produce a pitching motion that degenerates into hobby-horsing; the cure is to bear off and power up the sail.
The cutter rig outperforms the ketch upwind by a quarter to half a knot, while the ketch leads on a reach and run, primarily through the additional area of the mizzen staysail. Both rigs tack through 85 degrees, but with the hull's inherent leeway factored in, the effective tacking angle runs closer to 95 degrees — a figure worth knowing before entering a tight anchorage.
Under power, the rudder's relatively forward position by modern standards produces a generous turning circle and makes docking maneuvers slow and deliberate. Backing down requires practice because stern-to maneuvers are governed more by propeller walk than rudder authority — from impossible to workable, as one review tactfully describes the learning curve.
Accommodations
The interior rewards anyone willing to spend time aboard rather than simply transit. The layout manages to fit good double cabins fore and aft plus a pilot berth in the main saloon, allowing five berths to remain made up while underway — a genuine advantage for a family of four. The engine is stowed beneath the saloon floor to free up interior volume, which explains the expansive feel of the saloon relative to the 31-foot-3-inch waterline; it also means engine access is difficult when the machinery is hot, and the low siting puts it well below the waterline, creating siphon-back risk on the cooling circuit.
The aft cabin is described by contemporaries as one of the finest ever built into a boat of this size — fully accessible from the saloon, fitted with a proper closing door, its own hanging locker, and a single to starboard that serves as an excellent sea berth. The cockpit, by contrast, is the most-criticized feature: its depth was constrained by the headroom requirements of the aft cabin below, and the shortcoming was significant enough that the later Mason 44 received a substantially improved cockpit as a direct response.
Tankage is generous, typically exceeding 100 gallons of fuel and 200 gallons of water, which suits the boat's intended role as an extended-range passage maker. The galley is typically U-shaped, giving the cook a secure brace in a seaway.
Known Issues and Inspection Points
Surveyors approaching a Mason 43 should prioritize the deck condition — particularly anywhere teak overlay was screwed through the plywood core — along with the chain plates, stanchion bases, and the stem fitting. Old wood hatches should be considered consumables; the practical advice from the era is to discard them in favor of aluminum replacements rather than attempt restoration.
Any hull of this generation can develop osmotic blistering. The thick solid laminate, however, makes the Mason 43 a prime candidate for a peel-and-epoxy treatment if blistering is found, because there is substantial material to work with rather than a thin sandwich skin. The engine's below-waterline position warrants attention to the cooling-circuit anti-siphon arrangement, and the companionway's off-center placement to starboard is an idiosyncrasy worth understanding before living aboard in rough conditions.
Refit Considerations
The Mason 43 carries a reputation that supports meaningful investment. The structural envelope — hull laminate, keel encapsulation, deck-to-hull joint — is robust enough that most refits focus on systems modernization rather than structural remediation. Deck core remediation where moisture has entered through fasteners is the most common structural task, addressed by resin infusion and careful re-bedding.
Owners who have undertaken custom interiors find the bones accommodating; the heavy floors, frames, and bulkheads that make original access difficult also provide solid attachment points for modern installation. A wind vane or autopilot suits the boat's passage-making mission well, and the full keel's tracking ability reduces autopilot load on long runs, which translates directly into power savings for an offshore electrical budget.
The Verdict
The Mason 43 stands as one of the more coherent expressions of what a blue-water cruising yacht should be: built without compromise for the open ocean, capable of carrying a family and their stores across an ocean at a steady if unspectacular pace, and constructed to a standard that holds up across decades of hard use. It is not a marina performer, not a light-air flyer, and not a boat that rewards urgency in tight quarters. What it is — reliably, across the range of examples that have now accumulated sea miles on every ocean — is a seaworthy, comfortable, and honest world cruiser.
Pros
- Exceptionally heavy, solid-GRP laminate with encapsulated lead ballast — structural strength that survives groundings
- Aft cabin among the finest in its class for privacy, access, and sea-berth quality
- Capsize Screening Formula well under 2.0; high Motion Comfort Ratio reduces crew fatigue on passage
- Ketch option allows the sail plan to be managed by a couple without heroics
- Full keel tracks reliably on long runs, reducing steering load on autopilot or wind vane
- Ta Shing build quality among the highest of any Taiwan production yard of the era
Cons
- Plywood deck core on older boats is vulnerable to moisture infiltration through teak-deck fasteners
- Engine located below the salon floor — difficult to service when hot; cooling circuit requires anti-siphon attention
- Cockpit is small and constrained by the aft-cabin headroom below
- Large turning circle and prop-walk in reverse make marina maneuvering demanding
- Will not perform in light air; requires at least 10–12 knots to move the displacement efficiently
- Early interior construction buries plumbing and wiring behind fixed furniture
