Sanlorenzo launches the 58Steel as its first diesel-electric superyacht in the Steel range, introducing E-Pod propulsion that cuts emissions by roughly ten per cent and unlocks up to two hours of silent cruising under electric power alone. At 58.25 metres overall and 1,165 gross tonnes, the hull carries enough volume for a full-beam owner’s suite, four guest cabins and quarters for thirteen crew, while the 11.25-metre beam gives the naval architects room for an interior layout that flows without chokepoints. Two 850 kW E-Pods drive the steel hull to 15 knots, drawing from an 80,000-litre fuel reserve that supports transatlantic passages and extended Mediterranean seasons. At anchor, the hybrid system delivers up to eight hours of zero-emission hotel mode, powering air conditioning, galley and lighting without running generators. Zuccon International Project shaped the exterior profile, balancing a raked bow and a three-deck superstructure with signature Sanlorenzo restraint: clean gunwale lines, flush glazing and minimal hardware. The Sanlorenzo style department handled the interior, offering owners a palette of natural stones, matte timbers and brushed metals. A stern beach club, a foredeck jacuzzi and a tender garage sized for a seven-metre chase boat round out the outdoor programme. The 58Steel marks a technological milestone for La Spezia, proving that diesel-electric can scale to superyacht proportions without compromising the quiet, low-vibration experience Sanlorenzo owners expect.
Length
58.3M
Beam
11.3M
Draft
Volume
1165GT
Day Guests
10
Sleeping
10
Cabin
Crew
13
Cruise Speed
Max Speed
15KT
Fuel
80000L
Engine
2 x E-Pod 850 kW diesel-electric
Exterior
Zuccon
Interior
Sanlorenzo Style Department
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The 58Steel’s real innovation lives below the waterline.
Five 425 kilowatt generators and a one megawatt-hour battery pack, both built in a modular format, feed twin 850 kilowatt E-Pods that steer as well as propel, trimming manoeuvring effort and cutting the noise and vibration a shaft-driven hull would carry at the same speed. Sanlorenzo’s engineers used the saved mechanical complexity to collapse the engine room onto a single deck, freeing more than 40 square metres that would otherwise sit below decks and handing it instead to guest and beach club space. The result is a hull that cruises to 15 knots on diesel power, runs silently for up to two hours more, and can hold at anchor for eight hours on batteries alone with no generator running at all.
Zuccon International Project treats restraint as the point, not the limit.
The exterior studio stretched the bridge deck by a full metre over the model it replaces, using the extra length to deepen the interior volume without widening the silhouette or adding visible bulk. A raked bow and a disciplined three-deck superstructure keep the profile taut, flush glazing and minimal hardware doing the work that ornament would do on a less confident design. At 11.25 metres across the beam, there is more room inside than the hull’s own length would suggest, and Sanlorenzo says the volume now reads closer to a 64 metre yacht than a 58 metre one, the kind of claim that only holds up once you are standing in the saloon.
Autonomy here means two things: distance and silence.
An 80,000 litre fuel reserve gives the 58Steel the legs for genuine ocean crossings and extended seasons without returning to a marina, while the hybrid system adds a second kind of range entirely. Two hours of silent cruising under electric power alone opens anchorages where noise matters, and eight hours of zero-emission hotel mode at anchor means air conditioning, galley and lighting can run all night without a generator turning over. Together with the roughly ten per cent cut in emissions against a conventional diesel arrangement, the 58Steel extends her reach in ways a fuel gauge alone cannot capture, and does it without asking her owner to compromise on comfort to get there.
She carries thirteen crew to look after ten guests properly.
Ten guests share a full-beam owner’s suite and four further guest cabins, supported by thirteen crew in dedicated quarters, a ratio that speaks to genuine service rather than a skeleton staff stretched thin. Sanlorenzo positions the 58Steel deliberately between the 50Steel and the 64Steel in the range, aiming for the spatial feel of the larger hull while keeping the ownership overheads, berthing costs and crew requirements closer to the smaller one. For a buyer choosing between those two sizes, the 58Steel removes the trade-off rather than asking which compromise to accept, and does so on a platform already proven in steel construction.
The beach club is where the 58Steel makes her case in person.
Open on three sides at the stern, the beach club reads as a floating terrace rather than a platform, with its own bar, hammam, gym and beauty salon built in from the start. Forward, a foredeck jacuzzi and a main deck lounge opening onto a glass-bottomed infinity pool give her two distinct social decks rather than one, while a tender garage sized for a seven-metre chase boat keeps the toys out of sight until needed. The owner’s own deck goes further: a self-contained sanctuary with a spa bathroom, full-height glazing, a private pool, an office and a lounge that converts into a private cinema, a separation few yachts this size manage while still cutting fuel burn rather than adding to it.
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