SL90 Asymmetric

• LOA: 27.6 m (90 ft 7 in)
• Beam: 6.5 m
• Draft at full load: 1.93 m
• Guests: 8 in 4 cabins
• Engines: twin MTU
• Top speed: about 29 knots (reported)
• Layout: single starboard side deck, no port side deck
• Design and line: exterior by Zuccon International Project, part of the SL Asymmetric family launched with the SL102 in 2018

Why the asymmetric matters

The SL Asymmetric family began with the SL102 Asymmetric, shown in 2018 during Sanlorenzo's sixtieth anniversary and recognised as the first asymmetric motor yacht to reach the market. The concept grew out of the yard's collaboration with the car designer Chris Bangle, then was resolved into a workable boat by Martina and Bernardo Zuccon of Zuccon International Project. The SL90 Asymmetric applies that same principle to a smaller hull, which is what makes it significant. Where the SL102 proved the idea on a superyacht scale, the SL90 brings it within reach of a much wider group of owners.

For a builder known for restraint, the move was unusually bold. Rather than treating the side decks as fixed, Sanlorenzo asked what a boat would look like if one of them simply went away. The answer reorganised the whole main deck and gave the range an identity that rivals have found hard to copy.

One deck, redrawn

The defining choice is the removal of the port side deck. On a conventional flybridge yacht a guest walks forward along both sides of the superstructure, and those passageways eat into the interior. By keeping only the starboard walkway, the SL90 lets the main-deck saloon run out to the full beam on the port quarter. The reported gain in usable interior space is roughly ten square metres, which is considerable on a hull of this size.

The asymmetry is not styling for its own sake. It changes how light enters the saloon, since the glazing on the port side now sits close to the water rather than above a walkway. It also improves the connection between the interior and the sea, because the eye is no longer stopped by a raised bulwark and railing. The single starboard deck remains wide enough for safe, sheltered movement forward.

Sanlorenzo did not decorate around the rule. It deleted a side deck and rebuilt the day around the view.

Living on the main deck

Inside, the SL90 Asymmetric accommodates eight guests across four cabins, with a full-beam owner's suite and three further cabins below. The extra volume freed by the layout is spent on the main saloon and the master, both of which feel wider than the numbers suggest. Interiors follow the pared-back, residential language that Piero Lissoni has set as art director, with natural materials and long sight lines. Owners can specify finishes closely, in keeping with the yard's made-to-measure approach.

The relationship between inside and outside is the point of the design. Large side glazing and the low port sill bring the horizon into the room, so the saloon reads as a waterside apartment rather than a corridor with furniture. The cockpit and foredeck extend the living area when at anchor. It is a plan built for owners who spend most of their time at rest rather than under way.

The engineering underneath

The SL90 keeps the planing hull that defines the SL line, so it behaves like a sports flybridge rather than a slow cruiser. Power comes from a pair of MTU engines, and the reported top speed is around 29 knots. That gives the owner the option of a fast passage between anchorages when the weather allows. At economical revs the range opens up for longer coastal cruising.

The asymmetric layout does not compromise the naval architecture, because the hull below the waterline is symmetrical and only the deck arrangement changes. Sanlorenzo has kept the mechanical package conventional and proven, which suits a boat aimed at private owners rather than experimental buyers. Maintenance and service follow the same pattern as the rest of the SL range.

Who the SL90 suits

The SL90 Asymmetric sits in the heart of the ninety-foot market, where it competes with established flybridge yachts from other Italian and northern European yards. Its argument is space and daylight on the main deck, delivered without moving up to a larger and more demanding boat. For an owner trading up from the seventies or eighties, it offers a clear step in volume. For a Sanlorenzo owner, it is the accessible way into the asymmetric idea.

It rewards the owner who cruises with family and a small crew and who values the saloon as the centre of life on board. The design is less about outright numbers and more about how the day feels at anchor. That focus has made the asymmetric range one of Sanlorenzo's most recognisable signatures.

Design

• Exterior: Zuccon International Project (Bernardo Zuccon)
• Interior: Zuccon International Project
• Naval architecture: Sanlorenzo (in-house)

Who it is for: An owner stepping up to around ninety feet who wants a full-beam main deck and a close connection to the water more than a spec-sheet victory.

Guide price: New from approx EUR 7.8M; pre-owned range approx EUR 6.5M-8.8M, average asking approx EUR 7.6M (source: YachtBuyer / YachtWorld listings, 2026)