McConaghy MC68 Information, Review, Specs

Make
McConaghy
Model
MC68
Builder
Designer
Number Built

The McConaghy MC68 represents a sophisticated fusion of Grand Prix racing technology and ultra-luxury bluewater cruising. Designed by the renowned Jason Ker of Ker Design, this 68-foot carbon-reinforced catamaran occupies a niche segment where raw speed is balanced against extreme comfort. Unlike traditional cruising catamarans that often prioritize volume at the expense of hydrodynamic efficiency, the MC68 utilizes advanced composite engineering to maintain a light displacement while offering the amenities of a high-end coastal estate. According to the manufacturer, McConaghy Boats, the model is built using a mix of E-glass, carbon fiber, and Corecell foam, ensuring a rigid hull capable of handling high-speed offshore passages. The MC68 sits as a pivotal model within the broader MC Multihull range, which includes siblings such as the MC55, MC63, MC75, and the massive MC82, all of which share the same design language of aggressive vertical bows and expansive glass surfaces.

Sailing Performance & Handling

The sailing philosophy of the MC68 is rooted in "effortless speed." By employing a high power-to-weight ratio, the vessel is designed to outperform the wind speed in light airs and maintain stable, high-teens speeds in moderate breezes. A defining characteristic of its handling is the choice between fixed fins or retractable centerboards; the latter significantly enhances windward performance, allowing the boat to point much higher than typical production multihulls.

Handling is centralized on the flybridge, a design choice that offers 360-degree visibility for the helmsman—a feature often praised in editorial reviews for making the vessel manageable even with a limited crew. The use of carbon fiber for the mast and optional carbon rigging further reduces pitching moment, improving sea-kindliness in choppy head seas. While technical ratios like the Sail Area/Displacement (SA/D) are high, the MC68 is noted for its stability, a result of its wide beam and low center of gravity. Reports from sea trials emphasize that the boat feels responsive and "light on the helm," a rarity for a vessel of this displacement, largely due to the precision of the Ker-designed foils and balanced rudders.

Interior Comfort & Variations

The interior of the MC68 is characterized by an "open-plan" architectural approach that blurs the line between the saloon and the aft cockpit. This is achieved through McConaghy’s signature use of massive, retractable glass doors that slide away completely, creating a single, flush-deck social space. The saloon features a clean, minimalist aesthetic with high-grade finishes, often utilizing real wood veneers over lightweight cores to save weight.

Accommodations are highly customizable. Standard configurations usually offer a four-cabin layout, but the MC68 is frequently seen in an "Owner’s Version," where one entire hull is dedicated to a master suite featuring a walk-in wardrobe, a large office space, and an expansive en-suite head. The sibling MC63 and larger MC75 offer similar aesthetic choices, but the MC68 provides a specific "sweet spot" of volume that allows for a larger galley-down or galley-up option without compromising the structural integrity of the bridge deck. High-headroom throughout and the use of floor-to-ceiling windows ensure that the interior feels more like a modern apartment than a traditional yacht.

The McConaghy MC series has gained significant traction in the high-end multihull market, frequently appearing in major international showcases. The MC68 and its close siblings have been featured in extensive walkthroughs by Yachting World, where reviewers have highlighted the "push-button" sailing capabilities and the innovative use of the flybridge. The model's striking, aggressive profile has made it a favorite for nautical photographers and tech-focused sailing journalists who track the evolution of carbon-composite cruising.

Known Issues & Buyer’s Checklist

As a high-performance, systems-heavy vessel, the MC68 requires a more rigorous maintenance schedule than a standard fiberglass cruiser. Prospective buyers should focus on the following high-signal areas:

  • Retractable Glass Mechanisms: The large sliding glass doors and windows are engineering marvels but rely on complex tracks and seals. Buyers should inspect these for smooth operation and watertight integrity, as salt buildup can affect the electronic or manual sliding components.
  • Carbon Rigging and Hydraulics: If the vessel is equipped with carbon standing rigging, ensure that a recent NDT (Non-Destructive Testing) report is available. Additionally, the hydraulic systems for the winches and centerboards require regular servicing to prevent micro-leaks.
  • Finish and Delamination: While McConaghy’s build quality is world-class, the use of dark hull paints on carbon hulls can lead to significant heat absorption. Inspect for any signs of "print-through" or cosmetic thermal issues on the topsides.
  • Electronics Integration: The MC68 features a highly integrated digital switching system (often CZone or similar). Ensure that the software is updated and that there are no "ghost" faults in the bus system, which can be common in complex carbon builds.

Community & Resources

Owners of McConaghy yachts typically engage directly with the builder's bespoke concierge service, as the fleet is relatively exclusive. However, technical discussions and owner experiences are often shared within the McConaghy Multihull community, a group of performance-oriented sailors. Detailed technical specifications and build updates are maintained by the manufacturer on their official portal, McConaghy Boats.

The Verdict

The McConaghy MC68 is a tour de force of modern naval architecture, designed for the sailor who refuses to choose between a 20-knot afternoon sprint and a five-star living experience. It is a complex machine that demands respect and a healthy maintenance budget, but it rewards the owner with performance levels that few other cruising catamarans can match.

Pros:

  • Exceptional Speed: Capable of high double-digit speeds in conditions that leave other cruisers motoring.
  • Seamless Living: The indoor-outdoor flow is arguably the best in its class.
  • Advanced Construction: Use of carbon fiber ensures a rigid, durable, and lightweight hull.

Cons:

  • System Complexity: Requires a knowledgeable skipper or owner-operator to manage the high-tech onboard systems.
  • Price Point: Significant premium over production catamarans.
  • Draft: While centerboards help, the overall beam and size limit options in some smaller, traditional marinas.

Measurements

Construction & Hull

Construction Material
Hull Type
— Sailboat
Keel Type
Ballast
-
Displacement
-
Water Capacity
-
Fuel Capacity
-

Dimensions

Length Overall (LOA)
-
Waterline Length (LWL)
-
Beam
-
Draft
-
Max Headroom
-
Air Draft
-
Hover over a measurement
IJPE FS LOALWL

Rig & Sails

Rig Type
P (Main Luff)
-
E (Main Foot)
-
I (Foretriangle Height)
-
J (Foretriangle Base)
-
Forestay Length (est)
-
Sail Area
-

Calculations

Sail Area / Displacement (SA/D) Ratio
Ballast / Displacement Ratio
Displacement / Length Ratio (D/L) Ratio
Comfort Ratio
Capsize Screening Formula
Hull Speed
— kn