Planet Nine explorer yacht: 73.2 m Admiral, Lloyd's Ice Class 1D, 10,000 nm, helideck and hangar

In short

Planet Nine's owner had her steel hull built at a commercial shipyard rather than a yacht builder, to Lloyd's Register Ice Class 1D, which Boat International says lets her handle sea ice up to about 15 cm thick (Boat International). She carries 340,000 litres of fuel for more than 10,000 nm at 10 knots, or more than 6,000 nm at her 14-knot cruising speed (Boat International). Her design is built around aviation: a commercial-standard helideck sits over a hangar reached by a lift, so she can carry two helicopters, and she has her own helicopter fuel (Boat International, Boat International). She went to Antarctica in her first winter, 2018–19 (YachtCharterFleet); her broker describes a trip there and back to the Mediterranean via the west coast of South America within one southern summer (Boat International), and by 2024 she had covered more than 115,000 nm (Boat International).

Videos

Five tours from YouTube, most viewed first.

**The Brand New Ice Class SuperYacht: Planet Nine**The Yacht Report · 3 Jun 2018 · 529,618 viewsWatch on YouTube

**PLANET NINE | 74m / 242' | Admiral Yachts - Yacht for Charter**Fraser Yachts · 27 May 2026 · 13,647 viewsWatch on YouTube

**PLANET NINE | 73.2m (240.1ft) Admiral For Charter | One of the world's foremost explorer yachts**Burgess · 26 Feb 2025 · 10,414 viewsWatch on YouTube

**To Antarctica and back: Planet Nine's winter voyage**Stuart Larsen · 25 Feb 2019 · 10,282 viewsWatch on YouTube

**Amazing 1700 tons. launching operation managed by NCA Refit - Planet Nine**The Italian Sea Group S.p.A. · 18 Jan 2018 · 5,789 viewsWatch on YouTube

Photos

Overhead view of the helideck with its hatch open and the red helicopter lowered into the hangar below — The hangar open beneath the helideck

The aft helideck with a red helicopter on the yellow landing circle, the yacht's wake behind and a lounge with sofas at the forward edge of the deck — The helideck under way

Covered aft lounge with a long sofa, looking out over the helicopter on the deck behind — Lounge forward of the helideck

Shaded aft deck with sofas and armchairs, a dining table and glass doors open to the saloon — Aft deck

Sun loungers on a teak terrace at the bow, with the sea and the coast ahead — Sunbathing area forward

Observation lounge with a curved row of windows across the front of the deck, a games table with a backgammon board and armchairs — The observation lounge

Helicopter operations at sea

Boot room with wooden lockers, leather benches and a teak floor, opening onto the beach club — The boot room by the beach club

Engine control room with a computer workstation, a window into the engine room and switchboard panels — Engine control room

Owner's lounge with floor-to-ceiling bookshelves, sofas, a television on the wall and a yellow rug — The owner's library and lounge

Long main saloon with sofas, benches and a dining table set for many guests, with windows on both sides — Saloon and dining area

Cinema room with deep sofas facing a large screen — The cinema

Owner's stateroom with a wide bed, a sofa and windows to the sea — Owner's stateroom

Guest cabin with two single beds and framed drawings on wood-panelled walls — A twin guest cabin

Spa pool on the sun deck with the open sea beyond the rail — Spa pool on the sun deck

Galley with stainless-steel worktops, ovens, hanging pans and a wine fridge — The galley

Specifications

Length overall: 73.2 m 73.86 m in Fraser; 74 m in Burgess
Beam: 12.8 m 13.5 m in Fraser and SuperYacht Times
Draught: 3.61 m 3.8 m in Fraser and SuperYacht Times
Gross tonnage: 2,100 2,189 in Fraser and Boat International (2024)
Displacement: 1,486 t
Builder: Hull built at Cantieri San Marco, a commercial shipyard in La Spezia; fitted out and finished by The Italian Sea Group at Marina di Carrara under its Admiral brand. Interior joinery built by Fitz Interior in Bavaria and installed in Italy
Build timeline: Known as Project Nato, then Project Antarctica, and as Admiral Project 575. Launched at Marina di Carrara in January 2018; ready for delivery in May 2018; date of build 3 April 2018 in the Lloyd's Register class list
Design: Exterior by Tim Heywood, briefed for a 73 m world cruising yacht in the design language of his motor yacht Ice; interior by Mlinaric, Henry & Zervudachi (Tino Zervudachi); naval architecture by Alberto Acenzi. The hull was tank tested at MARIN
Name: A reference to the hypothetical ninth planet of the solar system
Hull and superstructure: Steel full-displacement hull with an ice belt, aluminium superstructure; five decks linked by a guest lift and a separate crew lift. All tanks and machinery are on one technical deck below the waterline
Ice class: Lloyd's Register Ice Class 1D. The hull has thick plating, strong frames and bulkheads, and protected seawater intakes for cold, high-latitude waters
What 1D means: Under Lloyd's Register rules, Ice Class 1D is for ships intended to navigate in light first-year ice; the forward hull, rudder and steering are strengthened to the Ice Class 1C FS standard. Boat International gives her limit as sea ice up to about 15 cm thick
Classification: Lloyd's Register, in class; built to Lloyd's standards and described as MCA and LY3 compliant
Propulsion: Two Caterpillar 3516B diesels of 2,575 hp; three Caterpillar generators, with the power system set up so that one 275 kW generator can carry the hotel load 280 kW generators in Fraser
Speed: 16 kn maximum; 14 kn cruising 16.5 kn maximum in Fraser and SuperYacht Times
Range: More than 10,000 nm at 10 kn, generators included; more than 6,000 nm at 14 kn
Range in use: Her captain says she can do 10,000 nm easily in normal use and refuels about once a season
Fuel and water: 340,000 litres of fuel and 40,000 litres of fresh water, with watermakers producing about 18,000 litres a day 345,500 litres of fuel in Boat International (2024)
Endurance: Cold rooms and a walk-in freezer on the machinery deck hold fresh provisions for about a month at full service, according to her captain
Stability and manoeuvring: Dynamic positioning, Quantum zero-speed stabilisers, Rolls-Royce steering, Schottel bow and stern thrusters, a centre keel and bilge keels
Helicopter: A commercial-standard helideck (LY2 Annex 6) aft on the upper deck, designed around the AgustaWestland AW109 Grand. A hydraulic lift lowers a helicopter into an enclosed hangar, so she can carry two at once: one below and one on deck. Refuelling on board
Helideck rating: Stated differently by date: a deck for at least 10 t (2018), helicopters up to 8 t (2024), up to 3.5 t landing weight (2025)
Helicopter on board: An MD Explorer 902 in her early seasons; later an MD600 (NOTAR), which Burgess offers to charter guests at a separate daily rate
Helicopter fuel: 9,000 litres of aviation fuel 8,000 litres in Boat International (2025)
Submersible: None reported
Tenders: A side-loading garage holds three Rupert tenders of 6 to 10.5 m; the main tenders sit in bays under overhead gantry cranes. The two original tenders are 10 m Rupert RIBs, one with a small cabin. Fraser's current listing also includes a 43 ft Freeman fishing boat
Support vessel: None reported
Cold-weather features: A boot room between the lower-deck cabins and the beach club; two beach clubs designed for warm and cold climates; a rack for snow skis for heli-skiing
Guests and crew: 12 guests in eight cabins for charter; 22 crew 16 guests in sale listings
On board: A main-deck owner's suite of about 250 m² with library, conference room and office; VIP suite with a private aft deck on the bridge deck; observation lounge on the upper deck; cinema; gym; spa and steam room; spa pool on the sun deck
Expeditions: After a first Mediterranean charter season she sailed to Antarctica in the 2018–19 southern summer; her broker describes a trip there and back to the Mediterranean via the west coast of South America within one season. Owner trips have included Patagonia, Fernando de Noronha off Brazil, the Seychelles, the Maldives, Albania and Panama; charter trips ran from Antarctica to Bermuda and Cuba. More than 115,000 nm logged by 2024
Film: Used in Christopher Nolan's Tenet during an extended charter on the Amalfi Coast, standing in for Vietnam
At-sea rescue: In November 2022, on an Atlantic crossing, she went to the aid of the Oyster sailing yacht Alika, whose crew member had a badly broken ankle; the injured sailor was airlifted to Martinique on 26 November
Refits: A six-month refit of about €5 million, with her first five-year survey, completed by May 2024; Boat International saw its final stages at Amico Shipyard, Genoa, where the hull was repainted a lighter grey. Another extensive refit in 2026
Charter: Offered for charter through Fraser and Burgess after the 2026 refit, with the Mediterranean in summer and Mexico, the Caribbean and Belize in winter in Fraser's listing. Not for sale or charter to U.S. residents while in U.S. waters
Owner: Reported to be owned by Lord Nathaniel Rothschild, the British-born financier (Boat International, September 2024). Boat International listed her among yachts rumoured to have changed hands off-market in 2025. Registered owner in the Lloyd's Register class list: Spirito Vitale Ltd (October 2026)
Sale history: Asking €85 million at delivery in 2018; asking €79.5 million with Fraser in 2024; the listing ended in November 2025
Flag: Cayman Islands

Where is she now

Live AIS position on:

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IMO 1009716 · MMSI 319334500

Questions

What makes Planet Nine an explorer yacht?

She has a Lloyd's Register ice-class steel hull, a range of more than 10,000 nm at 10 knots, about a month of fresh provisions and her own watermakers (Boat International). She also carries a helicopter in a hangar under a commercial helideck (Boat International).

What ice class does Planet Nine have?

Lloyd's Register Ice Class 1D (Boat International). Lloyd's rules define it as light first-year ice (Lloyd's Register), and Boat International puts her limit at sea ice about 15 cm thick (Boat International).

Can Planet Nine carry a helicopter?

Yes, two. The aft helideck is commercially approved, and a hydraulic lift lowers a helicopter into a hangar below it, so one can stay on deck while another is stowed (Boat International). She also carries helicopter fuel (Boat International).

Has Planet Nine been to Antarctica?

Yes. She first went there in the 2018–19 season, after her first Mediterranean charter summer (YachtCharterFleet), and her broker describes a trip to Antarctica and back to the Mediterranean via the west coast of South America within one southern summer (Boat International). Later trips with charter guests also went to Antarctica, and her owner cruised Patagonia (Boat International).

Is Planet Nine the yacht from Tenet?

Yes. She was used in Christopher Nolan's Tenet during an extended charter on the Amalfi Coast, where she stood in for Vietnam (Boat International).

Who owns Planet Nine, and can she be chartered?

Boat International reported in 2024 that Lord Nathaniel Rothschild owned her (Boat International) and in 2025 listed her among yachts rumoured to have been sold (Boat International). After a 2026 refit she is offered for charter for up to 12 guests (Fraser).

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Planet Nine

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Further reading

Specifications

Where is she now

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