OCEANCO LAUNCHES LEVIATHAN — A 111M / 364FT YACHT BUILT WITH INTENT, NOT CONVENTION

Oceanco is proud to introduce Leviathan, formerly known as Project Y722, a 111-meter (364-foot) diesel-electric yacht that redefines how we live and operate at sea. Designed not around tradition, but around purpose, Leviathan places people at the heart of every decision.

Built for an experienced owner deeply committed to team building and crew wellbeing, Leviathan represents a shift in how yachts are imagined, constructed, and operated. From the very beginning, the crew were involved—not just as operators, but as contributors of operational insights to shape a yacht that works better for those who run it.

Materials and systems were chosen not to reduce effort, but to redirect it toward higher-value tasks rather than repetitive maintenance. Durable, easy-care materials like honed stone and natural wool carpets minimize upkeep, allowing the crew to focus on what truly matters — whether creating richer guest experiences, supporting onboard scientific work, or managing complex real-time operations.

Traditional high-maintenance elements such as polished handrails with wooden caps, teak decks, and expansive painted superstructure sections were intentionally replaced with smart alternatives. Composite capping rails and decks, along with full-height glass superstructure bulkheads, were seamlessly integrated, enhancing aesthetics without compromise.

Leviathan’s design reflects a human-centric approach to life at sea. Naval architecture by Lateral Naval Architects and Oceanco, exterior design by Oceanco, and interiors by Mark Berryman Design all enhance functionality and comfort for both crew and guests.

The owner played an active role throughout the process alongside YTMC, the owner’s technical representatives, and Y.CO, ensuring the yacht remained aligned with its guiding philosophy. Crew and co-creators contributed their expertise, reflected in every practical detail and solution.

As a tribute to the spirit of collaboration at the heart of this project, a glass panel engraved with the names of over 2,000 individuals involved in the build now stands in Leviathan’s main staircase — a permanent reminder that this yacht was built by people, for people.

“Leviathan represents a new philosophy of yachting — one that places greater purpose at the heart of design, ownership, and operations,” says Deniz de Koningh, Project Director at Oceanco.
“The owner’s vision sets a forward-thinking example of how yachts can be built and used with intent. We are excited to see the influence she may have in shaping the future of the industry.”

“A sanctuary of comfort where silence meets strength, Leviathan, wrapped in her sharp lines, represents a superb synergy of form and function,” adds Dan Morgan, Managing Director of YTMC.

“She is not just a high-performance vessel,” says Charlie Birkett, CEO and Co-Founder of Y.CO. “She is a working ecosystem, designed to support everything from world-class hospitality to scientific research. That is what happens when you put people and purpose at the center.”

Leviathan will begin sea trials in the coming weeks. More details about her capabilities and the philosophy behind her will be shared soon.

SPECIFICATIONS 

Length 111m / 364ft 

Beam 17.8m / 58ft 

Exterior design Oceanco 

Interior design Mark Berryman Design 

Owner’s representatives Y.CO & YTMC 

Naval architecture Oceanco & Lateral Naval Architects