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With the Alpha 45, the Greek shipyard Technohull adds a 13.80 m to its catalog. On paper, the promise is clear: high speed, step-in hull, weekender layout. It remains to be seen who this boat is really aimed at, and under what conditions it will express its potential.
A stepped deep-V hull for fast offshore sailing
The first problem concerns the Dynastream Deep V hull with ventilated steps. The Alpha 45 adopts a deep-V hull shape, combined with redaning to reduce the wetted surface area at high speeds. With a claimed maximum outboard power of 4 x 500 hp, the shipyard claims a top speed in excess of 85 knots and a cruising speed of over 40 knots.
For experienced yachtsmen and fast offshore sailors, the benefits are obvious. A deep-V hull improves passage through the chop and limits impact. The wave piercing bow, thinner and more vertical, aims to split the sea rather than slam into it.
But this architecture also imposes constraints. At these speeds, fuel consumption rises sharply and the weather window shrinks. The light weight of around 6,500 kg (excluding engines), combined with 1,400 L of fuel, requires rigorous management of range. This type of boat requires trained helmsmen who can read the sea state and adapt their speed.
Width-to-length ratio and on-board circulation
The second key point is the beam-to-length ratio. With a beam of 4.30 m for an overall length of 13.80 m, the Alpha 45 boasts a generous beam for a semi-rigid (even a sporty one). This choice gives structure to the deck layout.
The boat features a full walkaround. You can move forward without stepping over the seats. At the bow, a U-shaped sundeck occupies the foredeck, complemented by a forward-facing bench integrated into the center console.
At the stern, several configurations are available: a large sundeck, a more compact version with seats facing the sea, or an L-shaped bench seat for easy access to the platform. For a dayboat program in the Mediterranean, with successive anchorages and life in the sun, the available space is an asset.
On the other hand, this width implies a considerable port footprint. At 4.30 m wide, the choice of port and the cost of space must be anticipated.
Central cockpit and aerodynamic protection
The third problem is high-speed helm ergonomics. The cockpit has two rows of three seats, with the pilot in the middle. This choice improves support symmetry and visibility over the bow.
The windshield and hard top feature a pronounced slope. Adjustable side deflectors complete the system. The aim is twofold: to channel airflow at high speeds and reduce passenger fatigue.
For fast runners, aerodynamic comfort becomes a real issue. At 50 or 60 knots, the pressure of the wind on the chest and face can quickly become painful. This work on airflow shows that the boat is designed for fast sailing, not just to display a maximum speed on a data sheet.
Cabin for two and CE B certification
Finally, the question of habitability and versatility. The Alpha 45 offers access to a double cabin via an electrically-operated console side door. There's a berth for two and a separate washroom with shower. Headroom is claimed to be comfortable for a 45-foot open boat.
With a 16-person capacity and CE Category B certification, the boat is designed for offshore cruising in heavy seas. Category B authorizes sailing up to force 8 and waves of up to 4 m, within the limits set by the manufacturer.
For a couple wishing to combine fast sailing with short stays on board, this configuration offers a coherent compromise. But interior space remains secondary to deck volume. This is a sporty weekender, not a family cruiser.
In the final analysis, the Alpha 45 is aimed at a very specific clientele: seasoned yachtsmen, offshore performance enthusiasts and owners looking for a dayboat capable of breaking 80 knots while retaining a usable cabin. And on the water, it's the boat's performance in choppy waters and the quality of its construction that will make the difference, far more than its advertised top speed.
