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From her innovative staggered-deck layout to her advanced power system, as the first superyacht to be fitted with methanol reformers and fuel cells, Almax is not so much a statement yacht as a serious statement of intent from visionary builder Sanlorenzo.

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Almaximum power

From her innovative staggered-deck layout to her advanced power system, as the first superyacht to be fitted with methanol reformers and fuel cells, Almax is not so much a statement yacht as a serious statement of intent from visionary builder Sanlorenzo.

Written by Julia Zaltzman

Photography by Guillaume Plisson and J Xerra

09 July 2025

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When Sanlorenzo unveiled Almax – the first hull in its all-new 50Steel series – at the 2024 Monaco Yacht Show, the industry let out a collective sigh of approval. And with good reason. Not only is the 50-metre vessel the world’s first yacht that’s equipped with methanol fuel cells, it also debuted the Italian yard’s patented Hidden Engine Room (HER) system, which in turn paved the way for an unprecedented approach to interior design and a cavernous interior volume – all while keeping Almax below the magical 500-gt threshold.

It’s a proposition that has resonated with owners. Four more hulls, each costing around $AU65 million, were spoken for before Almax had even been delivered. It’s a reflection of both the popularity of Sanlorenzo’s quality and craftsmanship, and the strength of Massimo Perotti’s endorsement of his product – the Sanlorenzo CEO decided to buy the first 50Steel himself instead of risking disappointment with a customer.

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The lower-deck beach lounge offers a relaxed retreat just steps from the water.
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The cavernous main-deck dining area anchors the interior layout with space and style.
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This central zone links the upper and lower saloons and leads to the forward owner suite.
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Up top, the split-level sundeck offers ample lounging and a pool with a view.
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Almax boasts a 150-square-metre pool terrace.
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Glass doors open onto the beach terrace, creating a seamless inside-outside space.
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The bridge deck features a relaxed, shaded seating and dining area for effortless outdoor entertaining.
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Almax cuts a sleek profile underway, showcasing her tiered decks and distinctive stepped window design.

“This is a pioneering situation – I didn’t want the responsibility of selling it,” he told Superyacht Life, noting that the first time they loaded the methanol tank on board, they had to do so by hand, using 20-litre cans to refill it until it reached 8,000 litres.

Risk goes hand in hand with innovative technology, and Sanlorenzo’s modular reformer fuel-cell system, developed in collaboration with Siemens Energy, is exactly that. It transforms biomethanol (green methanol) into hydrogen and then into clean electrical energy to power the yacht’s hotel systems, mitigating the need to store hydrogen on board. This allows Almax to generate up to 100 kilowatts of electrical energy with both the engines and diesel generators turned off, significantly increasing the time spent at anchor without diesel fuel consumption.

The idea to use hydrogen was prompted by the discovery that Siemens was building submarines using fuel-cell technology for the German and Italian navies. In 2021, Sanlorenzo signed a four-year exclusivity deal with Siemens Energy, and the path to Almax was laid. Alongside emissions savings – 90 percent of the cruising time is carbon neutral, according to Stefania Delmiglio, Head of Communications at Sanlorenzo – a significant advantage of the optional reformer system is the huge amount of space it saves. In place of a two-level conventional propulsion system, the reformer neatly fits on one level, the tank deck (under the lower deck) giving rise to Sanlorenzo’s aptly named Hidden Engine Room.

“It means the owners gain around 40 square metres of interior space, which has been used to create airy, flexible guest areas with an original layout,” says Delmiglio. The interiors by Sanlorenzo’s Art Director Piero Lissoni were developed using 3D technology – another first for the Italian shipyard – and are spread across five staggered decks comprising nine interior levels where partitions and barriers are kept to a minimum. The spaces feature dark wood walls and coffered ceilings – some reaching lofty heights of 3.35 metres – and are linked by a series of open stairs designed to let light through and enhance guests’ sense of connectivity.

The lower deck is where Almax’s signature ocean lounge resides, comprising two sumptuous sofas, each facing views out to sea, and a central coffee table. An eye-catching picture window directly connects the interior to a sprawling exterior beach club that feels more akin to a floating island, complete with a pool, oversized sunpads and easy access to the water. At anchor, the beach club extends to an impressive 150 square metres with its three sea terraces folded out.

“The massive beach club has been an absolute hit with clients, as have the luminous interiors and interconnected floating decks,” says Ewa Stachurska, Chief Marketing and Sustainability Officer at Sanlorenzo Asia-Pacific.

“Almax resonates with younger buyers who love extraordinary products and experiences and are intrigued with the project and its technological advancements.”

Forward of the ocean lounge are five steps leading down to the gym, spa with hammam, and guest cabins, including two VIPs, and two doubles that can be configured as twins, each with a pullman berth. The guest ensuites feature brightly hued floor tiles, fluted glass doors and built-in desk/vanity areas with light oak cabinetry.

Five steps up from the ocean lounge lead to the main deck where guests are welcomed into a spacious and sophisticated formal dining room. A red marble dining table sits at the heart of the space, complemented by a fluted marble drinks bar and a glossy maroon side cabinet. Subtle light panelling throws a luminous glow, creating a cosy transition from day through to night.

The main saloon aft, which is reached by five more steps, feels like a floating mezzanine. Dark oak is used across the walls and ceiling, offset by a large aqua tufted rug and cream linen sofas. As with all the interior guest spaces, furniture is kept to a minimum, allowing views through large full-height windows to take centre stage.

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Forward on the main deck is the full-beam owner’s suite, with a private office and two dressing rooms at the entrance hidden behind fluted glass panels for privacy. The bedroom is defined by Japanese-style silk screens depicting cranes in flight, dark oak walls and ceiling, and textured custom wallpaper. The large ensuite enjoys green tiling as well as a chunky marble basin.

A glass-sided staircase, designed to filter natural light throughout the interior, serves as the backbone of the yacht. A second sculptural spiral staircase forward of the main dining area leads to a more casual upper-deck dining area, a winter garden of sorts where the seamless continuation of full-beam decking and large sliding picture windows blur the lines between indoors and out. When at anchor last summer, this area comfortably hosted 70 guests for a cocktail reception.

“It’s the quality of execution and detailing, and the interconnected floating decks that truly stand Almax apart,” says Stachurska.

It’s a design theme that Zuccon International Project seamlessly transposed to Almax’s exterior without compromising the yacht’s profile. In fact, it’s celebrated in the stepped bank of windows that run down either side, artfully disguising the yacht’s staggered floating deck arrangement.

The three tiered aft decks are interlinked by stainless steel stairs, creating clearly defined areas that still unite guests. Large banks of cream sofas and an oversupply of sun beds make each area a haven for sunworshippers and social gatherings alike, with multiple alfresco dining options. On the multi-level sundeck there’s yet more lounging and a second pool for dips with a vista. When coming into port, the bank of sunpads at the bow provides the best seats in the house.

At first glance, Almax appears like any other beautifully designed 50-metre yacht. But the reimagined layout not only increases the amount of indoor and outdoor living space typically found on a yacht this size, it blows conventional yacht design out of the water.

“Almax exemplifies how the conformed layout of a yacht is based around the large engine room, and when you don’t have that, the opportunities are amazing,” confirms Delmiglio.

Perotti still has innovation in mind, namely a three-step Road to 2030 strategy that will see the shipyard launch its first net-zero superyacht in 2027 powered entirely by green methanol using a combination of fuel cells and internal combustion engines. A third step, full methanol engines, is planned for 2030.

The technology is also being applied outside the superyacht industry. The Group’s Bluegame division was responsible for building hydrogen-powered chase boats for the 37th America’s Cup in 2024, for both the New York Yacht Club’s team American Magic and the Société Nautique de Saint-Tropez’s team Orient Express. Capable of reaching 50 knots on foils propelled by a zero-emission hydrogen propulsion system, the chase boats allowed Sanlorenzo to trial the technology in smaller models prior to its integration into larger designs.

“We’re staggering our yacht releases, not because the technology isn’t ready but because the logistics aren’t in place yet in some marinas,” says Perotti.

“If I sell a boat to a customer [today] and they take it to a little island in Greece, they need an engine that works with both methanol and diesel, because if for some reason they can’t get methanol, as a backup solution they can still start the engines.”

It’s fair to say that the delivery of Almax has catapulted Sanlorenzo from a globally renowned Made in Italy icon to a superyacht builder whose advanced and sustainable engineering and technological solutions are at the top of its game.

sanlorenzoyacht.com
simpsonmarine.com

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