Sunseeker's Ocean class offers each of its two lengths in an open version and an Enclosed one. On the 82 that is a distinction without a measurable difference: the two 82 Oceans publish the same figure on all ten specification rows and even share four photographs on the manufacturer's own site.
On the 90 it is not. This is the boat where the pair actually separates, and the separation is worth understanding properly, because one half of it is a genuine feature and the other half is a number to confirm in writing.
What matches
Length overall, 88' 11". Beam, 23' 6". Displacement, 181,440 lbs at half load. Engines, twin MAN V12-1650s at 1,650 HP a side. Fuel, 3,434 gallons. Fresh water, 400 gallons. Maximum speed, 27 knots.
Seven figures, identical to the open 90 Ocean. Same hull, same power, same tanks, same published performance.
What does not
Two rows differ.
Draft is 6' 5" here, against 6' 4" on the open boat. Both are stated by Sunseeker as maximums at full load.
And accommodation is published as five cabins and six en-suites plus crew, where the open 90 publishes four cabins and four heads plus crew. That is an extra guest cabin and two extra en-suites on an identical platform.
That the two 90s differ at all is significant beyond these two boats. It is the evidence that the 82 pair's identical tables are real published data rather than a content-management artefact. When Sunseeker's model pages describe different configurations, they print different figures. The 82s print the same ones because they are the same boat. The images point the same way: the two 82s share four byte-identical gallery files, and the two 90s share none at all.
The accommodation is the whole argument, so confirm it
An extra cabin and two extra en-suites is the entire reason to buy this version rather than the open one, and it is the part of a yacht nobody can change for you after handover. So it belongs on paper before deposit rather than in a conversation.
Ask the dealer for the general arrangement drawing for your hull number and your build specification, and count cabins and heads on the drawing. That takes a few minutes and it settles the layout for your boat rather than for a model page.
Note also that six en-suites against five cabins means at least one of those heads is serving something other than a guest cabin. The drawing will show you which.
About that inch
The draft difference deserves a sentence of honesty too.
An extra inch, on an identical published half-load displacement, on the same hull. Both figures are described by Sunseeker as maximums at full load.
I am not going to invent an explanation. There are ordinary ones available and I have no evidence for which applies. What I will say is the practical part: if your berth, your travel lift or a bar you cross regularly leaves you inside a foot of margin, do not settle that inch from a website. Get the draft figure for your specification, from the yard, in writing.
The enclosure, and what it is for
The upper deck is closed in rather than open to the weather. That is what the name denotes and it is what changes in daily use.
An open flybridge is a fair-weather room. An enclosed one is available in shoulder seasons, in wind and on the grey days, and the more people you carry and the longer your trips are, the more that matters. Paired with the larger published cabin count, the argument this boat makes is a full house across a long season rather than a fast weekend.
What has not changed, and still needs solving
Fresh water is 400 gallons, exactly as on the open 90 and only four gallons more than the owner-run 82 Ocean two sizes down carries. Against 3,434 gallons of fuel that is roughly eight and a half to one.
Now spread it across five cabins plus crew rather than four. Water, not fuel, is the tank that ends the week, and it gets tighter on this boat than anywhere else in the class. A watermaker belongs in the build contract, not on the commissioning list.
Speed is the other one. Twenty-seven knots is the maximum, and it is not the rpm you will settle at on a long day. On the sea trial, hold the speed you actually intend to run and have observed consumption at that rpm written into the report with the load and tank state recorded beside it. That figure describes your hull at your loading, and it is the one that will shape how you use the boat.
Where it sits
Inside the class, the choice is simple once the accommodation is settled: the open 90 for four cabins and an open deck, this one for the larger arrangement and a deck that works in weather. Below it, the 82 Ocean Enclosed is the same idea on a smaller hull, drawn as cabins rather than cabins plus crew.
Outside it, the natural comparisons are the Sanlorenzo SL90A at 90' 7" and, for the five-guest-cabin arrangement, the Ferretti 940 at 95' 1". The Sunseeker is the wider boat than the Sanlorenzo and carries more fuel than either.
It is a lot of yacht for 88' 11", and the whole of my advice on it comes down to one instruction: get the drawing.