Steel Line
Sanlorenzo Steel Line
The Sanlorenzo Steel line is a fleet of fully custom superyachts from 50 to 74 meters, built with steel hulls and aluminium superstructures for global cruising. The range spans the 50Steel, 52Steel NEO, 58Steel, 64Steel, and the 74Steel flagship, each combining tailored interiors with expansive three-sided beach clubs and advanced hybrid propulsion. Across more than 15 years, Sanlorenzo has used steel to create more interior volume than the length suggests, holding the smaller models in the coveted sub-500 GT class while reaching true superyacht scale on the largest. The Steel line suits owners who want the volume and amenities of a much larger yacht with the design freedom of a fully custom build.
Primary Benefits of the Sanlorenzo Steel Design
The Steel line starts from a blank sheet: a robust, long-range platform shaped around how the owner wants to live at sea. Every signature feature, from the transforming beach club to the diesel-electric drivetrain, serves that ambition. Here is what each one delivers aboard.
Explore the SANLORENZO Steel Line Models
74STEEL
240 FT / 73 M
The Flagship Resort
The 74Steel redefines superyacht living across six decks, built on a diesel-electric platform with a 290-square-meter Ocean Resort beach club, a glass-bottomed infinity pool, an underwater aquarium lounge, and a two-deck living Ficus tree. A 130-to-140-square-meter owner’s suite, a bow sports court and helipad, and twin tender garages complete the experience. It hosts 12 guests plus 4, with a crew of 24 and a 6,000-nautical-mile range.
64STEEL
210 FT / 64.25 M
The Global Voyager
Across five decks and 1,350 GT, the 64Steel pairs a private upper-deck owner’s residence with a 78-square-meter transforming beach club and a glass-bottomed infinity pool. A touch-and-go helipad, central elevator, private cinema, and onboard spa support extended global cruising, with separated guest and crew circulation for discreet service. It carries 12 guests with a 6,000-nautical-mile range.
58STEEL
191 FT / 58.25 M
The Silent Cruiser
The 58Steel introduces the first diesel-electric system in the steel line, cutting emissions by around 10 percent and delivering up to eight hours of zero-emission hotel mode. Condensing the engine room onto one deck frees roughly 40 square meters for guest areas and a three-sided beach club with a bar, gym, hammam, and beauty salon. A suspended owner’s retreat sits above the sea behind full-height glazing for 10 guests.
52STEEL NEO
170 FT / 52 M
The Light-Filled Evolution
The second-generation 52Steel NEO pairs a full-displacement steel hull with open-plan, family-style living and large glazed surfaces. A main-deck glass-bottom pool with counter-current swimming filters daylight into the beach club below, which converts into a floodable garage for an 8-meter tender. It accommodates up to 12 guests across five refined cabins.
50STEEL
164 FT / 50 M
The Sustainable Pioneer
The 50Steel is the world’s first superyacht with a green-methanol fuel-cell system, developed with Siemens Energy to power hotel loads up to 100 kW with engines and generators off. A patented layout lowers technical hardware to a single under-deck level, opening loft-like volumes that connect directly to a 120-square-meter beach club. It hosts 10 guests in the sub-500 GT class with a 4,000-nautical-mile range.
Frequently Asked Questions
The Steel line is Sanlorenzo’s full-custom superyacht tier, with each commission designed around the owner from the keel up, shaped to their program, aesthetic, and long-term use. Steel and aluminium construction delivers structural resilience, expanded volume, and the ocean-going seakeeping that transoceanic programs require. Design collaborations with Zuccon, Paszkowski, Officina Italiana Design, and Studio Paolo Ferrari are matched to each project individually, so no two are alike.
The technology differs by model. The 50Steel uses a green-methanol fuel-cell system that powers all hotel loads with engines and generators off, anchoring in true silence. The 58Steel, 64Steel, and 74Steel use diesel-electric hybrid configurations with battery banks that deliver hours of zero-emission hotel mode, a meaningful advantage in marine parks and anchorages with tightening noise and emission rules.
It is a signature stern that folds out on three sides to create a water-level terrace connected directly to the sea. Depending on the model, it spans roughly 78 to 290 square meters and comes equipped with gyms, spas, saunas, bars, and lounges.
Every Steel yacht is built to order, shaped around each owner’s aesthetic with leading studios such as Zuccon International Project, Francesco Paszkowski, and Studio Paolo Ferrari. Sanlorenzo treats each hull as an individual creation, down to materials like Calacatta Borghini marble, mother-of-pearl, and custom finishes.
Find Your Steel Model with IYG
Choosing a Steel yacht comes down to the scale you want, how far you intend to cruise, and the life you picture aboard, and that is exactly the conversation we love to have. The Italian Yacht Group has spent decades immersed in Sanlorenzo and the wider Italian market, guiding owners through every decision from spec review to delivery and well beyond. Reach out to explore current availability, build slots, and the Steel model that fits your vision.