March 19, 2026
Sanlorenzo SD90: The Thinking Owner's 90-Footer
The SD90 is a navette in the proper sense: a semi-displacement 90-footer with two engine options, published at 14 knots and 17 knots, built …
Read the articleSanlorenzo SD90
Expert Review, Technical Specifications & Market Analysis
The Essentials
| Feature | Specifications |
|---|---|
| Overall Length | 90' 0" (27.43 m) |
| Beam | 23' 0" (7 m) |
| Engines | 2 × MAN i6, 800 HP or 2 × MAN V8, 1,200 HP |
| Fuel Capacity | 3,434 US gallons (13,000 L) |
| Water Capacity | 528 US gallons (2,000 L) |
| Cabins / Heads | 8 guests / 4 crew |
| Max Speed | 14 knots (MAN i6) / 17 knots (MAN V8) |
Source: Spec & Photos courtesy of Sanlorenzo. Specs verified by Tony Smith, USCG 100 Ton Master, on August 11, 2026.
Part of the Sanlorenzo SD series — see how owners step up through the lineup.
Quick Verdict
- Two published engine options with a published speed for each: MAN i6 at 800 HP for 14 knots, or MAN V8 at 1,200 HP for 17 knots
- Zuccon International Project exterior — balanced proportions and generous deck space rather than aggression
- 13,000 litres of fuel, 8 guests and 4 crew on a hull that is exactly 90 feet
Our Take
The SD90 is the clearest thing Sanlorenzo builds in the sense that it knows precisely what it is. This is a navette, and the yard's own designer talks about the navette world as romantic and complex because it is tied to someone who chooses to live at sea for a considerable stretch of time. That is the customer. Not the weekend, not the boat show. Weeks.
The engine choice is the decision that actually matters, and Sanlorenzo makes it easy by publishing a speed for each: the MAN i6 at 800 horsepower gives you 14 knots, the MAN V8 at 1,200 gives you 17. Most owners of a boat like this will be perfectly happy with the smaller pair. You would take the V8s if you genuinely need to make a weather window or hold a schedule, and you would pay for that in acquisition and in fuel. Both figures are the yard's own, which is more than most builders in this class will give you.
On a boat sold on the idea of going a long way, the range arithmetic is the homework I would do before talking to anyone. Get the sea trial sheet, get consumption at the speed you will actually run, and work the numbers yourself against the 13,000 litres of tankage the yard publishes.
Watch Our Sanlorenzo SD90 Reviews
Official Sanlorenzo Premiere: Inside the Sanlorenzo SD90
Video courtesy of Sanlorenzo.
Sanlorenzo SD90 Photo Gallery
Photos courtesy of Sanlorenzo.
Sanlorenzo SD90 Articles & Guides
Compare With
Frequently Asked Questions
What engine options does the Sanlorenzo SD90 offer?
Two, and Sanlorenzo publishes a maximum speed for each. Twin MAN i6 engines at 800 horsepower give a published 14 knots; twin MAN V8 engines at 1,200 horsepower give 17. Both figures are the yard's own, which is more transparency than most builders offer on an options list. The smaller pair suits most owners of a semi-displacement yacht; the V8s are worth the difference if you genuinely need to hold a schedule or take a weather window.
How far can the Sanlorenzo SD90 travel?
Sanlorenzo publishes a fuel capacity of 13,000 litres for the SD90, which is 3,434 US gallons, alongside 2,000 litres of fresh water. That tankage is the honest starting point for range: take observed consumption from the sea trial at the speed you intend to run, divide the capacity by it, and keep a proper reserve. Work it that way and the number is yours, built on figures you can verify.
Is the Sanlorenzo SD90 an owner-operator boat?
It is not designed as one. Sanlorenzo lists four crew for the SD90 alongside eight guests, and the systems are arranged around professional management. The yard's own framing of the navette concept is a boat for someone who chooses to live at sea for a considerable period, for whom that is a luxury rather than a limitation. That is a crewed proposition. If you want to run the boat yourself, look at the crew arrangements carefully before committing to the plan.