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With the MP12, the 3AF shipyard introduces a 12.70 m unit that aims to cover several sailing programs. Somewhere between an open dayboat and a closed cruiser, the boat promises to adapt over time. It remains to be seen what this means in terms of actual use, construction and performance.
Real modularity or structural compromise
The MP12's key feature is its ability to be converted from an open version to a cruiser configuration. This transformation is based on structural modules designed to be added or modified after launching.
On paper, the idea responds to a concrete demand from shipowners who are upgrading their program from coastal to coastal cruising. But this approach raises a technical issue, that of overall rigidity and the interfaces between modules.
The site's design was conceived from the outset with these developments in mind. This means anticipating loads, anchoring points and torsion constraints. For the user, the advantage lies in the boat's lifespan and resale value. On the other hand, you have to accept a certain complexity and potential cost associated with the transformations.
Powerful yet exclusive outboard propulsion
The MP12 is designed exclusively for outboard engines. Three 450 hp blocks can be installed, for a total of 1350 hp. A 3 x 350 hp alternative is available to limit fuel consumption.
This choice structures the entire stern of the boat. Lateral bathing platforms replace the classic aft deck, occupied by the engines. Access to the water remains possible, but differs from inboard configurations.
On the water, this engine promises a high cruising speed of around 40 knots. It will appeal to yachtsmen looking for fast travel between anchorages. On the other hand, fuel consumption and maintenance costs remain high, and noise levels can be higher than with inboard engines.
A stepped hull designed for speed and trim
The hull adopts a triple redan design. This type of hull is designed to reduce wetted surface and hydrodynamic drag. The expected result is improved acceleration, longitudinal stability and fuel consumption at high speeds.
The development is based on CFD calculations, with a clear objective: to maintain a stable trim at high speeds. For the yachtsman, this translates into healthier behavior in choppy waters, provided the weight distribution is maintained.
But a stepped hull requires a certain amount of handling. At low speeds or in certain sea conditions, it may react differently from a conventional hull. This type of hull is therefore aimed at users already familiar with high-speed craft.
A deck layout focused on life on board and traffic flow
The cockpit is organized around a modular space. Folding side decks extend the useful anchoring area. The aft sundeck, combined with a convertible dinette, structures the living area.
Wide side decks and a side door to the cockpit make it easy to move around. This is important for maneuvering with a reduced crew. Forward, the deck offers a second relaxation area with sunbathing and seating.
Under the hard top, the space is enclosed by glass, bringing the boat closer to a cruiser. The presence of a bar with sink and refrigerator confirms the boat's orientation towards extended day trips or short cruises.
Choice of materials from the automotive and aerospace industries
The MP12 incorporates several technical materials. The structure uses recycled PET, while certain elements are made of honeycomb polypropylene. The aim is to reduce weight while maintaining sufficient rigidity.
The use of carbon fibre for the hard top and pillars lowers the center of gravity. This improves stability, especially at high speeds. The deck can be fitted with a composite cork coating, providing a non-slip, insulating surface.
On board, the upholstery uses materials from the automotive industry, with particular attention paid to thermal resistance. For yachtsmen, this means greater comfort at anchor, especially in summer.
A hybrid navigation program to be clarified
The MP12 targets a broad spectrum, from fast dayboats to family cruisers. With 14 people allowed on board and a fuel capacity of 1,735 L, it is suitable for day trips as well as multi-day cruises.
The forward cabin, additional berths and separate shower room make it possible to envisage overnight stays on board. But the organization remains typically open, with a strong dependence on weather conditions to take full advantage of the outside spaces.
This hybrid positioning appeals to yachtsmen who want a single boat for several uses. But it also means compromises. The MP12 is not a complete replacement for a closed cruiser for long-distance cruising, nor for a pure dayboat for ease of use.
Ultimately, this model is aimed at users who prefer speed, modularity and user-friendly outings, with a fairly marked technical approach.
