Design Brief & Intent
The core mission of the MAT 1245 was to provide a competitive, high-stability racing platform that could be easily managed by a small crew or double-handed team, without sacrificing the interior comforts needed for off-season cruising. Mark Mills achieved this by designing a narrow waterline beam and fine bow entry to minimize drag in light air, combined with powerful aft sections that promote early planing when the breeze builds. This design philosophy directly contrasted with the boxier, high-drag cruising hulls of its era, allowing the MAT 1245 to out-point and out-pace typical production 40-footers across the entire wind spectrum.
Beneath the deck, the interior is a masterclass in weight-conscious, high-grade joinery. Understanding that excess weight is the enemy of performance, M.A.T. Sailing Yachts constructed all internal bulkheads and furniture using PVC foam-cored composite panels. The finish utilizes clean, low-maintenance white gelcoat surfaces contrasted elegantly with satin-varnished natural oak or khaya honeycomb-cored doors and lightweight alloy cabinet trims. This modern, minimalist aesthetic ensures that the boat feels open, bright, and structural, without carrying the weight penalty of traditional solid-timber cabinetry.
Variations & Configurations
Designed from the outset as a cohesive dual-purpose platform, the MAT 1245 is primarily configured with a highly practical triple-cabin layout. This arrangement features a double Vee-berth forward, twin double berths in separate cabins aft, and two comfortable settee berths in the main saloon, accommodating up to eight people. A fully enclosed heads compartment is situated forward of the mast, while the L-shaped galley is positioned near the companionway for optimal safety and ventilation at sea.
Performance configurations represent the main variables among individual hulls. Owners could specify draft profiles ranging between 2.55 meters and 2.65 meters, allowing tailoring to local racing waters. While a standard aluminum rig was offered, the vast majority of competitive campaigns opted for the high-modulus carbon fiber mast and boom package paired with rod rigging and an integral hydraulic mast jack. Twin composite steering wheels (typically 1000 mm Carbonautica wheels) mounted on composite pedestals offer exceptional visibility and control from either rail.
Sailing Performance & Handling
The technical ratios of the MAT 1245 paint a vivid picture of a highly responsive, stiff, and powerful racer-cruiser. With a sail area-to-displacement ratio of 25.46, the boat possesses an extraordinarily potent sail plan, enabling it to accelerate rapidly in light-air conditions and easily transition into downwind planing modes when pushed. This light-footed nature is supported by a displacement-to-length ratio of 157.53, placing the vessel firmly in the light-to-moderate displacement class.
The standout metric, however, is the remarkable ballast-to-displacement ratio of 49.33%. Carrying nearly half of its 15,000-pound total displacement in a deep lead/antimony bulb supported by an SG iron fin, the MAT 1245 boasts an immense righting moment. This translates to a boat that sails exceptionally flat, converts gusts immediately into forward acceleration rather than excessive heel, and tracks upwind like it is on rails.
In a seaway, the comfort ratio of 22.34 and capsize screening ratio of 2.0 tell a clear story. The motion of the MAT 1245 is energetic and highly responsive. Rather than the slow, rolling motion of a heavy displacement cruiser, this hull reacts dynamically to ocean swells. While this active feedback requires an attentive hand on the helm in heavy weather, the hull design remains highly stable, safe, and fully certified for CE Category A (Ocean) conditions.
Market Snapshot & Economics
Because they are built to order by a semi-custom shipyard using premium materials, the MAT 1245 is relatively scarce compared to mass-production brands, which helps them maintain their value extremely well. On the brokerage market, they command a significant premium, attracting serious amateur racers and fast-cruising enthusiasts who appreciate the high cost of their initial construction.
The auxiliary power is provided by a reliable 30 HP Yanmar marine diesel engine mated to a sail drive and a two-blade folding propeller, ensuring efficient motoring when the sails are flaked. Buyers looking at used models should budget for typical high-performance maintenance cycles. This includes inspecting the standing rod rigging, servicing the hydraulic backstay adjusters, and assessing the age of the carbon spar's clear coat or painted finish.
Known Issues & Maintenance
Due to the advanced vacuum-assisted resin infusion (VAI) process utilized during construction, structural laminate issues or hull voids are almost unheard of on these vessels. The hull, deck, and bulkheads are structurally bonded to form a monocoque unit, eliminating the shifting, creaking, or "Catalina smile" keel joint failures common in production boats of lower build quality.
To handle the immense loads generated by the high ballast ratio and rigging tension, M.A.T. incorporated an anodized aluminum alloy keel and mast frame coated in protective epoxy paint. Routine maintenance must include a thorough inspection of this frame's bilge area to ensure the paint remains intact and galvanic corrosion between the aluminum frame and surrounding stainless steel fasteners is mitigated. Additionally, standard maintenance for the Yanmar sail drive (such as monitoring the rubber hull diaphragm membrane and changing the gear lube) remains a priority for long-term ownership.
The Verdict
The MAT 1245 is a stellar example of an uncompromising dual-purpose cruiser-racer that successfully avoids the mediocrity of middle-ground designs. It offers blistering, silverware-winning speed on the racecourse alongside an interior that remains comfortable enough for genuine family cruising.
Pros
- Exceptional upwind stiffness and stability driven by an impressive 49.33% ballast ratio.
- Premium vacuum-infused composite construction utilizing an epoxy-paint-coated aluminum load frame.
- Highly practical three-cabin, eight-berth cruising interior constructed with weight-saving composite panels.
- Highly responsive helm and excellent light-air acceleration.
Cons
- Energetic motion in heavy seas (comfort ratio of 22.34) may feel too active for traditional cruisers.
- Scarcity on the brokerage market makes finding a well-maintained used model difficult.
- High replacement costs for performance-oriented components like carbon spars, rod rigging, and specialized racing sails.
