Design and Costruction

Hull

As they say, a boat is not a car. The sea is unpredictable, it is salty, and it immediately highlights every poor feature of the boat. A boat first of all must sail well.

For this reason, the main aim of the projects is the choice of an hull able to face every condition of the sea in complete safety. Our aims are: sea keeping in every condition: for the planing boats the hull is usually deep-V with medium deadrise ranging from 25 to 35 degrees, with a fore half-angle wider than 45 degrees; a very good length/beam ratio that allows some kinetic energy saving in the impact; an optimal number of spray rails in a suitable position that keeps away the sprays allows a dry navigation; high sheer and a correct incremental volume ratio during the wave impact in order to grant gentle decelerations. After 60+ different hulls launched and tested, all that met customer satisfaction and achieved their goals, ranging from heavy semiplaning catamaran to high performance twin stepped RIB, we have a great database and experience to design the right hull for each purpose.

Seakeeping

The seakeeping is crucial requirement for a seaworthy boat.

Very few people go out to sea when it is rough, but nevertheless the boat should ensure such a safety that whoever finds himself in a difficult situation (and it can happen) should safely come back home. The sea-keeping is granted in the project of the boat or of the RIB by designing a good hull, a correct distribution of the weights in order to avoid bad trim angles, a remarkable sturdiness, unsinkable structure, static and dynamic self-bailing. The deck is designed in order to quickly evacuate the water due to a breaker wave . Therefore, there are watertight bulkheads, correctly inclined floor boards, big scuppers that immediately evacuate the water in excess. All this is valid regardless of the CE design category. Some simulations are launched to test the stability (righting lever) and the righting moment in every condition. Many of our boats have righting angles above 130° and some are even self-righting.

Deck Customization

In the project of a boat a main point is the possibility of choosing the deck layout following personal requirements. Expecially for aluminum alloy designs, the customer can choose different layouts , of course in accord with seakeeping and safety regulations.

Performance

The hulls created by our design studio can achieve great performances compared to the performances of the boats of similar dimension and characteristics, therefore on equal used power they have the advantage of low consumption and of being faster. This is obtained due to great experience joined with latest analysis technologies, like Computational Fluid Dynamics (CFD) joint to the big experience.

Just few examples:

• Akes 23, an aluminum boat with very deep V and good seakeeping capabilities, achieves 44+ knots with only 200 hp, while the consumption is about 1 liter per mile at 25 knots.
• Vento500: extremely low consumption, until 3 miles per liter while the stepped hull achieves 33 knots at WOT with 40/60 hp.. but the main feature of this rib is travel through the waves at planing speed while most same-sized competitors point the bow to the sky and stay in displacement mode.
• Med-extreme 8.5, is a twin stepped hull RIB, 8.5meters, achieved 56 knots with a single 300 hp. One of the word fastest hull.
• Salpa Soleil 33: the stepped hull of this beautiful rib achieved 54 knots with a pair of 300 hp while most competitors need more horsepower with hulls that can’t afford the rough waves in the same way.