The first model from Antonini Navi will be a 40M crossover called UP40

The name stands for Utility Platform 40. A modular steel hull for a yacht, designed by Fulvio De Simoni, which is difficult to nail down to a segment.

By looking at renderings, would you say she’s a motoryacht, a crossover or a sport explorer? Antonini Navi Utility Platform 40 is a modular hull project, which can be adapted to build three different types of displacement yacht.

Slow cruising, quick delivery

From the pencil of Fulvio De Simoni, in collaboration with the shipyard’s engineering team, the UP40 is a 40-metre steel platform serving as the base for three different models: motoryacht, crossover and sport explorer as mentioned, according to the superstructure chosen by the client.

This solution, for which engineering work has already been completed, ensures faster delivery times and generous customization options in terms of style and type.

Antonini Navi,is the recently launched brand, specializing in superyachts, coming from Gruppo Antonini, Tuscany shipbuilder (and more) dating back to the late 40s.

The first UP40 the shipyard is working on has a 40-meter long steel displacement hull, with naval architecture, engineering and bulkheads designed to adapt to the three different superstructures, all designed by Fulvio De Simoni.


The hull is the first element of the utility platform. Beside the differences in terms of design and how they will used by their future owner, all boats built by Antonini Navi will have a hull with the same technical parameters and the same level of robustness and seakeeping. The shape is designed to render the interiors of each yacht as roomy as possible, while the waterlines will be efficient to guarantee safe navigation while containing consumption levels and maintaining a high degree of comfort.

In the case of the UP40, the strategy of giving the vessel large fuel tanks and a special focus on efficiency at sea will guarantee a range of over 5,000 nautical miles at 10 knots. The top speed will be around 14 knots and cruising speed 12 knots.


As we said, the three different superstructure styles will be used to produce three different models: a modern motoryacht, an essential crossover and a multi-purpose sport explorer.

The award-winning architect and designer Fulvio De Simoni dug deep in his experience to put into practice an idea that, when applied to the world of steel superyachts, entails complex procedures, also in terms of stylistic design. Fulvio De Simoni’s architectural priority was to create concepts with a design that was harmoniou and, balanced yet innovative. Two linear main decks with no interruptions are connected by a half-deck housing the yacht’s only helm station.

The hull’s freeboards are extensive and the cut of the bow is contemporary, but the stern section is where the designs can be varied most to highlight the various concepts, which despite being different share the same family feeling.


Though the layout of each concept is common to the various models, the peculiarity of the whole platform is the ample scope for customization. On each yacht the interiors can be fitted out as desired, from the number and size of the cabins down to the smallest details, so the yacht can reflect the owner’s needs and the model selected.

Another of the project’s strong points is the reduction in delivery times. Having a 40-meter hull platform fully defined in terms of naval architecture, engineering and construction, with the choice of superstructure left open, will allegedly reduce delivery times by up to 50%. So, from the moment the owner decides on a concept and signs the contract, the unit built to their specific requirements will be delivered in just 12 months.

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The full design of the first unit is nearing completion, as is the definition of the three different superstructures, whereas hull construction will start up in September 2020.

The latest update: UP40 Crossover will be the first unit of Antonini Navi’s megayacht

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