| Gross tonnage | 34,000 GT |
|---|---|
| Length | 207 m |
| Beam | 27.7 m |
| Passenger capacity (double) | 190 |
| Passenger capacity (max) | 222 |
| Builder | Fincantieri |
| Yard | Ancona |
| Launched | 2025 |
| Maiden voyage | 2026-03-20 |
| Operator | Four Seasons Yachts |
| Status | Active |
Overview
Four Seasons I is the first vessel of Four Seasons Yachts, the move of the Four Seasons hotel group into ultra-luxury cruising, built by Fincantieri at Ancona, Italy, launched on 23 January 2025 and entering service with a maiden voyage on 20 March 2026. She is classed in this directory as a cruise ship, but her operator presents her as a yacht, and her numbers explain why: at a registered 35,070 GT in the dataset and 207 metres long, she carries just 185 guests at double occupancy — 222 at maximum — in 95 suites. That is roughly one-tenth the passenger density of a conventional luxury cruise ship of similar length, and it is the defining fact about her.
She is also a technology statement. At her delivery Fincantieri described her as the first "Navis Sapiens" — a vessel built on an integrated digital architecture using artificial intelligence and real-time data, designed to learn and to accept new functions over her life. In short, she attempts to define a category — the hotel superyacht — rather than compete within an existing one.
Key specifications
Dataset figures: 35,070 GT, length 207 m, beam 27.7 m, passenger capacity 185 at double occupancy and 222 maximum, built by Fincantieri at Ancona, launched 2025. No crew figure, speed, IMO number or hull number is recorded in the dataset, and none is invented here: on crew, the only figure the operator publishes is a planned one-to-one guest-to-crew ratio, which is a ratio, not a crew count, and is reported as such below rather than converted into a number.
One discrepancy should be flagged for readers. Launch coverage from the builder and the line quoted the vessel at 34,000 GT — a pre-delivery marketing figure. The dataset's registered figure is 35,070 GT, and that is the figure used throughout this guide; the 34,000-ton figure is not used.
Design and construction
The project was ordered from Fincantieri in July 2022, in a contract valued at more than €400 million, for Marc-Henry Cruise Holdings, the joint owner and operator of Four Seasons Yachts alongside the Four Seasons group. Assembly at Ancona began with the keel laying in July 2024, and she was launched — floated out — at a ceremony on 23 January 2025 attended by Fincantieri's chairman and chief executive and by Marc-Henry's owner, Nadim Ashi. More than 2,000 people were reported to be working on her final outfitting in the weeks before delivery.
The design is residential rather than nautical in its references: 95 individually designed suites, every one with a terrace, arranged to remove barriers between guests and the sea. The signature space is the Funnel Suite, the accommodation built into and around the funnel casing, with a private terrace reported at up to 457 square metres — a figure that would be a large apartment ashore. A transverse marina at the stern, opening the ship's width to the water for bathing and water sports when at anchor, is the other defining structural feature described at launch, together with a large salt-water pool of resort rather than shipboard scale. Her "Navis Sapiens" digital architecture, highlighted by Fincantieri at delivery, integrates ship systems on a scalable platform intended to support safer, more efficient operation and to absorb future technology without rebuilding the vessel around it.
Naming, launch and maiden voyage
The name Four Seasons I is a brand statement and a fleet plan in two words: the hotel group's name, and a Roman numeral that presumes successors. She is not named for a person, place or event, and no godparent or traditional christening is recorded in the sources consulted — her launch was a shipyard ceremony of the builder-and-owner kind.
That launch took place at Ancona on 23 January 2025. Her debut was originally announced for January 2026; the programme was revised, and her maiden voyage instead began on 20 March 2026, in the Mediterranean, the date recorded in the dataset and confirmed in delivery coverage. Delivery coverage from Fincantieri's handover describes her sailing on that maiden voyage on 20 March following completion at Ancona, where the yard's other berths at the time held Viking's ocean ships under construction — a neat illustration of Ancona's place in the small-ship end of the industry.
Career by operator
Four Seasons I has one name and one operator, and a career that began in March 2026. She is the founding vessel of a new entrant: Four Seasons Yachts, operated by Marc-Henry Cruise Holdings as joint owner and operator with the Four Seasons group. Nothing beyond her entry into service can be recorded yet, and this guide adds no deployment claims, which for a yacht-style vessel are in any case set season by season.
| Period | Name | Operator |
|---|---|---|
| 2026–present | Four Seasons I | Four Seasons Yachts |
Onboard character
Her character follows from her arithmetic. With 95 suites for a maximum of 222 guests, and a published guest-to-crew ratio of one to one, the ship is planned around space and service levels closer to a private yacht or a small grand hotel than to any cruise ship: suites with floor-to-ceiling glass and large terraces, a residential style the builder describes as "all-suite, residential", and public spaces scaled for dozens rather than hundreds of people at a time.
The era-defining elements are the ones built into the hull: the Funnel Suite occupying the funnel itself, the transverse marina that turns the stern into a watersports platform, and the resort-scale pool. Behind the scenes, the Navis Sapiens platform is intended to personalise and adapt the ship's operation around its guests — the hotel industry's model of data-led service applied to a vessel. Dining, spa and entertainment provision on a ship of this size is necessarily bespoke and is revised by the operator; it is the scale and the suite-only plan, not any list of venues, that define her.
Major refits and incidents
None recorded in the sources consulted. Four Seasons I entered service in March 2026; she has had no refit, and no incident involving her appears in the sources used for this guide. The one programme change on record — the move of her debut from the originally announced January 2026 to 20 March 2026 — was a scheduling revision before she entered service, not a refit or an incident.
Sister ships and class
The dataset records no formal class for Four Seasons I, and she is at present a class of one in service. She is not, however, a one-off by intention: options in the original Fincantieri contract were exercised for a second vessel, ordered in June 2023 and due for delivery in 2027 according to delivery coverage, with a third ship expected to follow by around 2030 on the same programme. Those successors will make the "I" in her name meaningful. Until they arrive, her only true comparators are the other hotel-brand yachts of the same movement — the Ritz-Carlton Yacht Collection's vessels, which pioneered the model from 2022 — which are competitors, not sisters.
Fate and where she is now
Four Seasons I is active and operating for Four Seasons Yachts, as recorded in the dataset, having entered service on 20 March 2026. She is at the start of her career as the founding ship of a new fleet; no change of name, operator or status has been announced in the sources consulted.
Sources: https://www.bairdmaritime.com/superyachts/vessel-review-four-seasons-i-new-ultra-luxury-yacht-boasts-scalable-design-and-intelligent-systems, https://maritime-executive.com/article/fincantieri-delivers-first-ultra-luxury-yacht-cruise-ship-for-four-seasons, https://www.cruiseandferry.net/articles/fincantieri-launches-first-four-seasons-yachts-ship-at-ancona-shipyard