Seamaster 46 Information, Review, Specs

Sailing Performance & Handling

Unlike many traditional motorsailers that sacrifice windward performance for interior volume, Perry designed the Seamaster 46 as a "motorsailer that really sails." The hull features a modified fin keel and a skeg-hung rudder, providing a balance of directional stability and responsiveness. With a displacement of approximately 33,000 lbs and a ballast-to-displacement ratio of roughly 40%, the boat is exceptionally stiff and carries its momentum well through heavy chop.

The masthead ketch rig is the standard configuration, chosen for its versatility and manageable sail areas—a critical factor for short-handed couples. While its Sail Area/Displacement (SA/Disp) ratio of 15.34 suggests a boat that is slightly under-canvassed in light air, it excels in the 15–25 knot range, where the ketch rig allows for a "jib and jigger" configuration that keeps the boat balanced and level. Owners report a comfortable motion in offshore conditions, supported by a high Motion Comfort Ratio of approximately 35.47, indicating it is significantly more stable than the average production cruiser of its size.

Interior Comfort & Variations

The interior of the Seamaster 46 is a masterclass in traditional Taiwanese joinery, characterized by extensive use of solid teak and hand-rubbed finishes. The layout is typically a two-cabin, two-head configuration centered around a spacious raised salon or "deck salon" design. This arrangement provides 270-degree visibility from the interior, effectively eliminating the "basement feeling" found in traditional monohulls and making the vessel an ideal candidate for liveaboards.

The master suite is located aft, often featuring a walk-around queen berth and private head access. A unique architectural feature of the 46 is the "fantail" stern, which incorporates a swim platform and easy access for diving or dinghy boarding—a rarity for boats of this vintage. While the standard model features a center cockpit, some variations included an inside steering station (pilothouse), allowing the skipper to navigate in climate-controlled comfort during inclement weather.

Popular Mentions & Media

The Seamaster 46 has maintained a persistent presence in the blue-water community, frequently appearing in long-distance cruising logs. It has been a recurring participant in the Baja Ha-Ha rally, with vessels like Albatross (Hull #1) and Tao documented in Latitude 38 for their trans-Pacific and Mexican coastal voyages. The model is often discussed within the Robert Perry Yacht Designer community as a prime example of his "performance motorsailer" philosophy.

Known Issues & Buyer’s Checklist

Prospective buyers should approach a Seamaster 46 with a focus on systems and structural age, given its early-80s construction:

• Fuel and Water Tanks: The vessel carries an immense volume of fuel (up to 560 gallons) and water (500 gallons). Inspect the integrity of these stainless steel or iron tanks, as replacement in a finished teak interior is a major undertaking.
• Chainplates: Original chainplates are reaching the end of their reliable lifespan. Due to the boat's heavy displacement and ketch rig, the loads on these components are high; many owners have replaced them with upgraded 316-grade stainless steel.
• Teak Deck Core: While some hulls were ordered without teak decks, many featured the classic screwed-down teak. Check for moisture intrusion into the deck core around the thousands of screw holes, which can lead to delamination.
• Engine Access: While generally good, the Perkins 4-236 (a common 85hp powerplant) should be checked for cooling system corrosion and manifold leaks, particularly if the boat has sat idle.

Community & Resources

The Seamaster 46 benefits from two distinct support networks. Technical queries regarding its Robert Perry design are best addressed through the Robert Perry Yacht Designer Fan Club, where the designer himself frequently contributes. For those interested in the brand’s British heritage and general maintenance of the Seamaster nameplate, the Seamaster Club serves as a vital repository of manuals, historical data, and owner camaraderie.

The Verdict

The Seamaster 46 is a robust, over-engineered cruiser that bridges the gap between a traditional motorsailer and a performance ketch. It is a vessel built for the "long haul," offering tankage and storage capacities that few modern 46-footers can match.

Pros:

• Exceptional Range: Fuel and water capacities allow for months of autonomous cruising.
• Superior Build Quality: Solid fiberglass hull and exquisite interior woodwork.
• Versatile Rig: The ketch sail plan provides numerous reefing options for heavy weather.
• Liveability: Raised salon design offers great light and visibility.

Cons:

• Light Air Performance: Heavier displacement means the engine is often required in under 10 knots of breeze.
• Draft and Maneuverability: A near 6-foot draft and long-keel characteristics make tight marina handling a challenge.
• Maintenance Intensity: Extensive exterior and interior teak requires significant upkeep.