August 21, 2026
The Sanlorenzo 50X-Space: Same Numbers as the 50Steel, Different Boat
On paper the 50X-Space and the 50Steel are near enough the same yacht. What separates them is the aft open-air living room, its folding balc…
Read the articleThe Sanlorenzo X-Space Series
Exceptional exploration
If the yachts you keep coming back to are the ones where the back of the boat is the main room, X-Space is the part of the Sanlorenzo range drawn around that idea. The yard places the line between the crosshairs of its own displacement yachts and the adventurous spirit of the Explorer line, and calls it a bold concept of remarkable versatility and intelligent architecture.
What that means in practice is one room. The aft area of an X-Space is an open-air living room rather than a deck, and on the 44X-Space it grows by a further 18 square metres when the folding balconies come down. That is the feature to judge this line on, because on paper these boats sit very close to Sanlorenzo's steel superyachts: the 50X-Space and the 52Steel share the same MAN D2862-LE489 engines, the same 55,000 litres of fuel and the same sub-500-GT classification, with about a metre and a half of length between them. What they do not share is the back of the boat.
Sanlorenzo's current fleet page lists one X-Space, the 44, which is designed with five decks and — the yard's own framing — blends the essence of a classic navetta with the resilience of an explorer. The 50X-Space is the line's second model, carried on the yard's previous site and through its representative network. We cover both here, but read them differently. The 44X-Space is in the water; the first hull, LA LA LAND, has been delivered. The 50X-Space is not. Every figure and every image of it comes from the specification and the renderings, and nothing on this page describes a 50 that anyone has been aboard.
The X-Space Lineup, Smallest to Largest
Every Sanlorenzo X-Space model we review in depth, in the order owners step up through the series.
Photo credit Sanlorenzo.
143'4" and 496 GT across five decks, with an aft living room that grows 18 square metres on folding balconies.
164'1" and 499 GT: the larger X-Space, with folding balconies aft and Sanlorenzo's methanol bi-fuel debut.
Don't see the X-Space model you're after — or a brand-new launch? Request specs through Yacht Specs Direct.
Moving Up the X-Space Series
44X-Space — 143'4" (43.7 m), 496 GT, 15 knots, 10 guests / 8 crew. Twin MAN D2862-LE489s at 1,066 kW each, 50,000 litres of fuel and five decks on a 28'10" beam. The aft open-air living room expands by 18 square metres on folding balconies, opening straight into the interior behind it. Piero Lissoni describes the proportions as compact yet extraordinary, and that is a fair reading of a 44-metre boat carrying five decks under 500 gross tons.
50X-Space — 164'1" (50 m), 499 GT, 16 knots, 12 guests / 9 crew. The same MAN block, 55,000 litres of fuel and a 30'6" beam. This is the hull Sanlorenzo has named to carry its first bi-fuel green methanol and diesel propulsion system, developed with MAN under the EU-co-funded LIFE MYSTIC project, with a launch announced for 2027 — the yard's own claim is up to a 70% reduction in navigation emissions. Treat all of it as announced rather than delivered: there is no 50X-Space page on Sanlorenzo's current site and no delivered hull.
Both boats sit deliberately under 500 gross tons — 496 and 499 — which has real consequences for survey and manning obligations depending on flag and use, and is very likely why the numbers land exactly where they do.
One figure X-Space publishes that the rest of the fleet does not: a draft. Sanlorenzo's own X-Space material gives 2.80 m at full load for the 44 and 2.96 m for the 50. Everywhere else at this yard — SL, SD, SX, SP, Steel, Alloy, Explorer — that number is simply absent from the current model pages. Neither X-Space has a published cruise speed, water capacity, displacement or range, so none of those appear here.
Our Take
X-Space is the Sanlorenzo line I would look at hardest if the way you actually use a yacht is stern-to, at anchor, with the back of the boat open. The aft living room is not a bigger cockpit with a different name. On the 44 it grows by 18 square metres when the balconies fold down, and that is the difference between a deck you pass through and a room you spend the day in. Everything else about these boats — the volume, the five decks, the sub-500-GT ceiling — follows from protecting that space.
I want to be blunt about the comparison the specification sheets will not make for you. Put the 50X-Space next to the 52Steel and they read as the same boat: the same MAN D2862-LE489s, the same 55,000 litres, the same sub-500-GT classification, sixteen knots each, and about a metre and a half of length between them. They are not the same boat. The Steel is a steel superyacht that gives you volume and turns its stern into a beach club; the X-Space is drawn around the open aft room from the first line, and the 50 is the hull Sanlorenzo has chosen to debut bi-fuel green methanol propulsion on. If neither of those two things moves you, buy the Steel. It is the more conventional boat and it is far better documented.
Now the honest limit, and it is a large one on this page. Only the 44 exists as something you can walk, with the first hull delivered. The 50X-Space has no page on Sanlorenzo's own website, it is published through the yard's representatives, and every image of it is a rendering. I am not telling you to stay away — hulls at this yard are routinely sold before they are finished and that is simply how it works here. I am telling you not to give the 50's numbers the same weight you give the 44's, to have the specification written into the build contract rather than quoted from a page, and to ask exactly what the methanol package means for bunkering wherever you intend to cruise. Green methanol is not a fuel you can yet assume you will find, and a propulsion system that has never been to sea is a commissioning conversation, not a feature.
Sanlorenzo X-Space Articles & Guides
Watch Our Sanlorenzo X-Space Reviews
Official Sanlorenzo Premieres
Videos courtesy of Sanlorenzo.
Frequently Asked Questions
How do the two X-Space models differ?
Size, guest numbers and how far along they are. The 44X-Space is 43.7 metres (143 feet 4 inches) on an 8.80-metre (28 feet 10 inches) beam, 496 GT, 50,000 litres (13,209 US gallons) of fuel, 15 knots, and ten guests with eight crew. The 50X-Space is 50 metres (164 feet 1 inch) on a 9.30-metre (30 feet 6 inches) beam, 499 GT, 55,000 litres (14,529 US gallons), 16 knots, and twelve guests with nine crew.
They share the same twin MAN D2862-LE489 package, so the difference is volume and berths rather than pace. The 50X-Space exists so far as design and renderings, with no delivered hull, and it is the model Sanlorenzo named to debut its bi-fuel green methanol propulsion.
Why are both X-Space models under 500 gross tons?
Because the 500 GT threshold carries real consequences for survey and manning obligations depending on flag and intended use, and the X-Space brief is to deliver superyacht volume while staying below it. The 44X-Space is published at 496 GT and the 50X-Space at 499 GT — both close enough to the line that the design intent is not in question.
Gross tonnage measures enclosed volume, not weight. Sanlorenzo publishes no displacement figure for either model, so a GT number should never be read as tons of steel. The same discipline runs through the yard's steel line, where the 52Steel is published simply as under 500 GT.
What is Sanlorenzo's X-Space line?
Two superyachts that blend a classic navetta with explorer intent: the 44X-Space at 43.7 metres (143 feet 4 inches) and the 50X-Space at 50 metres (164 feet 1 inch). Both are steel, both use twin MAN D2862-LE489 engines, and both are kept deliberately under 500 gross tons.
The name describes the brief. X-Space is about extracting volume from a compact hull rather than adding length — five decks on the 44X-Space, and on both boats an aft open-air living area that expands through folding balconies into the interior alongside it. Sanlorenzo publishes maximum speeds of 15 and 16 knots respectively, and no cruise speed or range for either.
Which X-Space Fits Your Life?
Tell us how you plan to use the boat — guests, range, crew or no crew — and we'll give you the straight story on where in the X-Space series you belong, new or brokerage.
Explore All Sanlorenzo ModelsOr reach Tony directly: TS@MintedYachts.com · +1 (404) 805-9819