• Guests

    26

  • Cabins

    11

  • Crew

    37

Length GT Built
111m
4,970 GT 2025
Beam Draft Top Speed
17.8m 4.8m 17.6 Kts

Leviathan is a 111m motor yacht delivered by Dutch shipyard Oceanco in 2025. The yacht's elegant exterior design is by Oceanco, while her interiors are the work of Mark Berryman Design.

Key Features

  • ABB Azipod drive
  • Tri-fold beach club and wraparound walkways
  • Interior design by Mark Berryman
  • Unique layout encourages crew-guest synergy
  • Low noise & vibration for comfort onboard
  • All grey by day, at night neon lit up

Design & Construction

Designed around a displacement steel hull and an aluminium superstructure she features a 17.8m beam and a 4.8m draft. The yacht has an internal volume of 4,970 GT (Gross Tonnes).

Construction started in mid 2021 with the keel laid under the project name 'Oceanco Y722'. The yacht was designed and constructed in compliance with the Lloyds Register technical standards. Launched in August 2025 this yacht undertook sea trials over the following months. She was delivered to her owners in November 2025.

Exterior Design

Leviathan measures 111m (364ft) with a 17.8m (58ft) beam, giving her strong presence without crowding the lines. The exterior takes on a forward-leaning stance with tight prismatic geometry, broad glazing and wraparound walkways that keep movement simple and views open right along the decks. The hull and superstructure follow a pale grey scheme cut by a single turquoise bootstripe at the waterline, which links the profile to the aft half-court on the upper deck.

After dark the yacht shifts character. Programmable LEDs run along bulwarks and deck edges in low, controlled strips, shaping a clear outline that feels close to something out of Tron while keeping glare down for crew. Twin arcs of light frame the bow and highlight the sweep of the hull through each turn.

Across the aft terraces, a grey-toned graphic patterned in parallel lines creates a quiet, engineered rhythm. The lines split, taper and rejoin around stairs and fittings before matching port and starboard in nested chevrons. The aft decks step down towards the water with broad social space above and a tri-fold beach club that opens straight to the sea. Composite decks and composite capping rails replace varnished timber to cut upkeep, while full-height glass bulkheads keep sightlines clean.

Leviathan departs from conventional layouts by placing scientific capability in this same zone. A dive centre, laboratory, onboard hospital and 3D-printing workshop sit alongside guest terraces, giving the yacht the ability to support research without losing the relaxed feel of the open decks.

Interior Design

Mark Berryman Design leads the interior with a practical brief: durable surfaces, low-upkeep materials and layouts shaped by both crew and guest needs. Leathered and honed stone keeps grip and texture without delicate polish. Natural wool carpets soften the atmosphere and retain warmth while staying easy to care for. Large glass panels pull daylight deep into each deck, so rooms stay bright even when the weather closes in.

The interior plan encourages a blend of privacy and shared use. Guests and crew can cross paths naturally when the programme calls for teamwork, and quiet separation remains easy when required. A combined crew mess and dining space can shift into a collaborative zone for joint tasks, reflecting the owner’s focus on people and everyday function.

Crew input fed directly into routing, storage decisions and equipment placement. Bulkheads are kept clear, with technical elements built into clean structural lines. The result is simple to move through, with fewer small maintenance tasks. The textures and tones remain calm, built around modest colours and furniture scaled for use rather than show.

In the main staircase stands a full-height glass panel etched with the names of more than 2,000 contributors: designers, engineers, craftspeople and crew. It records the build team in a way rarely seen on a yacht of this scale and anchors the interior to the project’s shared ethos.

Accommodation

Leviathan carries accommodation for up to 26 guests across 11 suites, supported by a crew of up to 37. The diesel-electric layout frees the quietest aft section of the hull for guest cabins, where motion is gentle and noise transfer remains low. Passage routes for crew run parallel to guest corridors to keep service discreet and efficient on extended voyages.

Scientific facilities sit close to the accommodation zone without intruding on guest privacy. Storage, technical rooms and the support spaces needed for long-range missions run through the working side of the yacht, giving the crew capacity to manage operations far from shore.

The interior volume and forward machinery placement give Leviathan more flexibility than most yachts of her size. Guests gain soft-riding suites; crew gain a more workable layout; and research activities gain proper space without forcing compromises in comfort.

Performance & Capabilities

Leviathan runs on a diesel-electric with two ABB DO980P Azipods that form the core of the drive system, each paired with a custom five-blade propeller developed through cavitation testing to cut pressure pulses and vibration. The steel foundations beneath the pods carry extra stiffness so vibration does not transfer into the hull.

A 5.5MWh battery system supports silent periods overnight and smooths generator load during the day. This reduces running hours, keeps fuel use controlled and gives the yacht the ability to operate quietly for extended stretches when research or guest routines demand low acoustic disturbance. Waste heat recovery and an advanced wastewater treatment system sit alongside the electrical architecture, rounding out the environmental package.

Work with MARIN shaped the hull around comfort as much as efficiency. Leviathan uses the latest evolution of Lateral’s DE-Series hull family, with beam, waterplane shape and GM targets set to lengthen the natural roll period beyond 12 seconds. A seawater ballast system holds the yacht inside its intended loading window, and Quantum MagLift units and XT fins manage roll in varied conditions. The result is steady behaviour underway and at anchor, with a notable drop in noise and vibration across the interior.

A VFA Solutions air-filtration and monitoring system runs throughout the yacht, giving cleaner onboard air than most vessels of this scale. Redundancy in auxiliary and electrical systems gives the crew headroom to manage operations without disruption, even on long deployments far from support ports.

Member of the World's Biggest Yachts Club

This yacht is proudly ranked at 52 in the YB100, our exclusive list of the World's Biggest Yachts by Gross Tonnage. It has held this distinguished position for 5 months, showcasing its unmatched true size.

This yacht also entered the traditional Top 100 Longest Yachts in 2025 at 49 and is now ranked 50, holding a spot in the table for 5 months due to its extraordinary length.

To understand the difference visit our page on the World's Biggest Yachts.

Leviathan Yacht is not For Sale

Motor yacht Leviathan is off the market at the moment, but you can browse other Oceanco Yachts for sale or search all new & used yachts for sale across the globe using YachtBuyer’s Market Watch.

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