Builder Spotlight

Ultimate Catamaran's - Spaceline

Design • Versatility • Engineering • Elegance • Performance

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The Spaceline Series by Ultimate Catamarans redefines the "Superyacht Experience." By utilizing a high-volume catamaran platform, the Spaceline provides the living square footage of a 60-meter monohull within a highly efficient 36–45 meter footprint. Constructed in marine-grade aluminum at the renowned Iskra Shipyard, this project offers a unique combination of European engineering pedigree, eco-conscious hybrid propulsion, and immediate construction availability.

Introducing "The Spaceline Series" by Ultimate Catamarans
  • Acoustic Privacy: The catamaran hull naturally separates guest suites from engine noise, providing a "silent" cruising experience.
  • The Beach Club: A transformative stern area that creates a massive sea-level playground for tenders, jet skis, and lounge space.
  • Customization: Interior design by Laura Pomponi (Luxury Projects) allows the buyer to fully tailor the interior space to their personal lifestyle.
ADO Yachts is a specialized maritime "Shipyard Liaison" Our services focus on new-build project management. We are not a brokerage and do not participate in the sale of used vessels.

Spaceline Series Catamaran Yacht Platform

A modular yacht platform defined by space, stability, and scalable engineering

The Spaceline Series by Ultimate Catamarans represents a contemporary approach to large yacht design, leveraging the advantages of catamaran hull forms to deliver exceptional volume, stability, and operational flexibility. The series is engineered as a scalable platform, with the UC 150 and UC 180 representing two primary aluminum configurations.

Design Philosophy & Scalability

Developed under Ultimate Catamarans’ concept, the Spaceline platform is engineered to maximize usable deck area and interior volume while maintaining efficient performance. The design is inherently modular, allowing the platform to scale in length and capability based on owner requirements.

The Spaceline platform supports aluminum construction up to approximately 64 meters (210 feet), offering exceptional scale while preserving the performance and weight advantages of aluminum.

Beyond this threshold, projects naturally progress to steel hull construction, ensuring structural integrity, regulatory compliance, and long-term durability at larger dimensions.

Reference Specifications – UC 150 (Aluminum)

Length Overall45.60 m / 150 ft
Beam15.50 m / 50.9 ft
Draft2.20 m / 7.2 ft
Gross Tonnage775 GT
ConstructionAluminum
ClassificationLloyd’s Register
FlagTBD

Extended Configuration – UC 180 (Aluminum)

The UC 180 represents the upper end of the UC platform in aluminum construction. At approximately 55 meters (180 feet), this configuration allows for significantly expanded accommodation, increased deck areas, and enhanced onboard systems, while retaining the stability and efficiency inherent to the catamaran hull form.

Length OverallApprox. 55 m / 180 ft
ConstructionAluminum (maximum practical length)
Design BasisUC modular platform
ConfigurationFully custom interior & deck layout

Interior & Exterior Space (Platform Dependent)

Total AreaScales with length & configuration
Exterior DecksExpanded on UC 180
Interior VolumeSignificantly increased vs UC 150
AccommodationGuest & crew layouts fully customizable

Performance & Engineering (Platform Range)

Maximum SpeedUp to 20 knots (configuration dependent)
Cruising SpeedApprox. 18 knots
RangeUp to 5,000 NM @ 12 knots
Energy SystemsDiesel generators, hybrid, included solar

Learn more about the Spaceline series and its approach to modular catamaran design, scalability, and operational efficiency.

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Technical Specifications

Propulsion & Energy Systems

The UC Spaceline Series yacht platform is engineered around a flexible energy architecture that combines conventional diesel power generation with hybrid capability and optional solar integration. This approach provides operational reliability while allowing owners to reduce fuel consumption, noise, and emissions when conditions allow.

Diesel Power Generation

Main Generators 2 × high-output diesel generators (1,120 kW each) provide primary electrical power for propulsion, hotel loads, and onboard systems during cruising and long-range operation.
Auxiliary Generators 2 × smaller auxiliary diesel generators (99 kW each) support low-load operation, redundancy, and efficient power management when full output is not required.

Hybrid & Battery Systems

Battery Capacity Integrated battery storage provides up to 55 kW of electrical capacity, enabling silent or low-noise operation at anchor and during low-demand periods.
Hybrid Switchboard A hybrid-capable switchboard allows seamless management between generators, battery power, and shore power, optimizing efficiency and system redundancy.

Solar Energy Integration

Solar Panels (Included) Up to 100 m² of solar panels can be integrated into deck and superstructure surfaces, providing supplemental power generation and reducing generator runtime.
Operational Benefits Solar input supports battery charging, hotel loads, and low-energy systems, particularly during daylight operations and extended anchorage.

This layered propulsion and energy strategy allows the yacht to operate efficiently across a wide range of conditions — from long-distance cruising powered by diesel generators to quiet, low-impact operation supported by batteries and solar energy. The result is a vessel that balances performance, autonomy, and modern environmental considerations.

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Interior

Interior Layout & Accommodations

The interior of the UC Spaceline Series yacht platform is designed with a clear separation between guest areas, operational spaces, and crew accommodations. This approach ensures privacy, efficiency, and comfort for all onboard, whether the yacht is cruising, at anchor, or supporting extended time at sea.

Owner & Guest Accommodations

Owner’s Suite A full-beam owner’s suite of approximately 80 m² configured as a private apartment featuring a dedicated lounge and two private balconies providing exceptional space, privacy, and outdoor connection.
Guest Cabins The yacht accommodates 12 guests across spacious guest cabins, each designed with a private ensuite bathroom and its own dedicated balcony ensuring natural light, ventilation, and direct exterior access for every guest.

Galley & Service Areas

Main Galley A professionally equipped galley of approximately 26 m² is positioned to support guest service and crew operations efficiently with direct access to service routes and storage areas.
Operational Flow The galley layout supports seamless meal preparation and service, minimizing interference with guest areas while allowing for efficient provisioning during extended voyages.

Crew Quarters

Crew Cabins Crew accommodations include up to eight cabins, each approximately 12.5 m² designed to provide privacy, storage, and comfort for extended rotations at sea.
Captain’s Cabin A dedicated captain’s cabin of approximately 12 m² is positioned for operational efficiency and quick access to the bridge and control spaces.

The interior configuration reflects a yacht designed for long-range operation, professional crew performance, and guest comfort. Layout flexibility allows owners to tailor accommodation density, service flow, and living spaces to suit private use, charter, or extended cruising programs. All UC Series interiors and deck layouts are fully customizable. Non-structural layout changes incur no additional cost; only structural modifications or deviations from standard equipment specifications may affect pricing.

Space Advantage

Storage & Toys — Maximizing the Spaceline Experience

One of the defining advantages of the Ultimate Catamarans platform is the intelligent use of the massive beam inherent to multihull design. Unlike monohulls where equipment often compromises living space, these solar-electric vessels allocate dedicated technical zones and modular deck areas specifically for high-end water toys, tenders, and expedition equipment.

The Multi-Purpose “Transformer” Platform

Heavy Lifting The aft hydraulic submersible platform is engineered to safely launch and recover electric tenders, Jet Skis, and large personal watercraft with controlled precision and minimal crew effort.
Private Beach Club When partially submerged, the platform becomes a protected sea-level lounge, enabling effortless swimming, diver access, and low-impact boarding in a wide range of sea states.
Extended Deck Space When raised, the platform integrates seamlessly with the aft cockpit, increasing usable deck area for dining, sun loungers, social events, or equipment staging without compromising circulation.

Dedicated Toy Storage & Rack Systems

Foredeck Lounge & Stow Solid foredeck sections incorporate recessed lockers for fenders, mooring gear, foldable kayaks, and stand-up paddleboards, preserving clean deck lines and guest safety.
Integrated Rack Solutions Reinforced rail and bulkhead structures support custom rack systems for foil boards, kite-surfing equipment, and additional SUPs, keeping primary walkways clear and unobstructed.
Under-Seat & Technical Storage Hollow-core seating modules and technical voids provide substantial dry storage for snorkeling equipment, safety gear, dive systems, and compact electric sea toys.

Allowable Payload & Space Allocation — By Spaceline Model

Spaceline 88 / 88T Designed for efficient long-range cruising, the 88 series supports an electric tender or compact RIB on the aft platform, multiple personal watercraft, and a full complement of paddleboards and foil toys, while maintaining wide, uncluttered circulation decks.
Spaceline 120 Increased displacement and internal volume allow for larger tenders, dedicated dive and toy storage zones within the hulls, and expanded technical spaces for compressors, tanks, and expedition-grade equipment.
Spaceline 150 Engineered for true superyacht operations, the 150 supports substantial payloads, including large RIBs, multiple PWCs, extensive water-toy inventories, helicopter-capable deck arrangements, and purpose-built garages — all without encroaching on guest living areas.
Spaceline 150 YS The Yacht Support variant maximizes payload capacity and deck strength, prioritizing cranes, open working decks, and cavernous storage for tenders, submersibles, expedition vehicles, and logistics equipment in support of a primary yacht or global mission profile.
Spaceline 180 Scaling the Spaceline concept into the ultra-large superyacht class, the 180 offers dramatically expanded deck loading, multi-zone tender storage, and segregated operational areas capable of supporting large tenders, aviation equipment, and extended expedition inventories while preserving vast guest spaces.
Spaceline 210 Representing the pinnacle of the Spaceline platform, the 210 is conceived as a true megayacht or support flagship, with extraordinary payload margins, multi-deck toy logistics, heavy-lift crane integration, and mission-specific storage zones suitable for global exploration, research, or multi-vessel operations.

Across the Spaceline range — from 88 to 210 feet — storage and payload capacity are engineered as part of the vessel’s core architecture, not an afterthought. Combined with onboard solar-electric charging infrastructure, electric tenders, e-foils, surfboards, and underwater scooters are powered cleanly and efficiently, reinforcing the zero-emission philosophy from ship to shore.

Spaceline Series

The Ultimate Catamarans — Spaceline Series

The Spaceline Series is a family of large-format, solar-electric and hybrid catamarans engineered to deliver extraordinary volume, stability, and efficiency across multiple size classes. Each model shares a common engineering philosophy while scaling capability, range, and onboard systems to match the owner’s mission.

Spaceline 88 A transocean-capable three-deck catamaran offering remarkable interior volume, long-range hybrid propulsion, and refined private yacht living in a highly efficient footprint. Ideal for owners entering the superyacht category with a future-ready platform.
Spaceline 88T A flexible evolution of the 88, featuring alternative deck and sundeck configurations. Designed for owners who value customization in exterior living while maintaining the same proven engineering and range capabilities.
Spaceline 120 A four-deck platform that significantly expands interior volume, guest accommodations, and technical spaces. The 120 is optimized for extended cruising, increased autonomy, and a true step into large-yacht capability with reduced operational complexity.
Spaceline 150 The flagship private yacht of the Spaceline range. This ultra-luxury catamaran delivers exceptional scale, long-range performance, and extensive customization potential — including helicopter operations, expansive toy storage, and statement-level exterior decks.
Spaceline 150 YS A purpose-built Yacht Support variant designed to operate independently or alongside a mothership. Featuring vast deck areas, garages, and payload capacity, the 150 YS enables global exploration without compromise to the primary yacht’s elegance.
Spaceline 180 An evolution into the ultra-large superyacht class, the Spaceline 180 dramatically expands volume, deck strength, and systems capacity. Conceived for owners seeking world-scale range and multi-mission capability, it supports larger tenders, advanced aviation or expedition systems, and expansive guest environments rivaling far larger monohulls.
Spaceline 210 The pinnacle of the Spaceline Series, the 210 represents a new category of megayacht catamaran design. With extraordinary interior volume, segregated operational zones, and unmatched payload flexibility, the 210 is envisioned as a global flagship platform — capable of private ownership, expedition support, or multi-vessel operations at the highest level.

Across every size — from 88 to 210 feet — the Spaceline Series delivers intelligent luxury, combining catamaran stability, modular construction, and advanced energy systems into scalable platforms designed for modern owners. From refined private cruising to global exploration, Spaceline yachts are engineered to perform far beyond traditional expectations.

Spaceline Series — Model Comparison

The Spaceline range scales intelligently across size classes, maintaining a consistent engineering philosophy while expanding range, volume, and operational capability. This overview highlights how each model is positioned within the lineup.

Model Approx. Length Decks Primary Role Key Highlight
Spaceline 88 ~88 ft / 26.7 m 3 Private cruising / entry superyacht Transocean range with exceptional volume
Spaceline 88T ~88 ft / 26.7 m 3 Private cruising with layout flexibility Alternative sundeck & exterior configurations
Spaceline 120 ~120 ft / 36.5 m 4 Long-range private yacht Expanded autonomy, payload & guest spaces
Spaceline 150 ~150 ft / 45–46 m 4 Flagship private superyacht Helicopter ops, large garages, full customization
Spaceline 150 YS ~150 ft / 45–46 m 4 Yacht Support / Expedition Maximum payload & operational deck space
Spaceline 180 ~180 ft / ~55 m (planned) — Ultra-long-range private superyacht Even larger guest interior & volume (comparable to ~100m monohull interior)
Spaceline 210 ~210 ft / ~64 m (planned) — Megayacht / flagship support or expedition platform Future flagship tier with maximum space & operational capability

While each Spaceline model serves a distinct mission profile, all platforms benefit from catamaran stability, modular construction, and advanced hybrid or solar-electric propulsion — delivering space, efficiency, and operational confidence beyond traditional monohull yachts. Models beyond 150 ft are in development and expected to push volume and range even further.

Build Timelines

Accelerated Build Timeline — The Spaceline Advantage

In today’s superyacht market, build schedules have expanded dramatically. Owners entering contracts at many traditional shipyards are often facing delivery timelines extending well beyond five years. The Spaceline project is structured differently — prioritizing clarity, efficiency, and schedule certainty without sacrificing customization or engineering integrity.

Why Spaceline Builds Faster

Proven Platform Engineering The Spaceline is not a blank-sheet project. It is built upon a scalable, repeatable catamaran architecture that significantly reduces early-stage design and engineering timelines.
Efficient Catamaran Construction Twin-hull geometry allows for parallel fabrication, simplified structural workflows, and predictable systems integration compared to complex monohull builds.
Parallel Design & Procurement Engineering, interior planning, and long-lead equipment sourcing are coordinated simultaneously rather than sequentially, eliminating common schedule bottlenecks.
Disciplined Customization Owners retain flexibility in layout, materials, and onboard systems, while avoiding open-ended design cycles that frequently extend build timelines.

Realistic Build Time Expectations

Industry Norm Large custom yacht projects commonly require 36–60+ months from contract to delivery, with many yards now quoting timelines extending into 2029 and beyond.
SpacelineProgram The Spaceline platform is engineered for a streamlined build cycle typically ranging from 36 to 40 months subject to availability, final specification and fit-out scope.

This disciplined approach enables a clearly defined delivery window of Summer 2028 / 2029 — offering owners a rare combination of schedule confidence, customization flexibility, and modern catamaran performance. In a market defined by extended delays and uncertainty, the Spaceline stands apart as a project designed to move forward with purpose.

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Learn more about the Spaceline series and its approach to modular catamaran design, scalability, and operational efficiency.

Request Private Prospectus
Spaceline 150 Specs

ADO Yachts, ADO Maritime, and American Diesel Outfitters LLC ® are independent and are not employed by Ultimate Catamarans. ADO Yachts has been authorized by Ultimate Catamarans 01/06/2026 to promote their product to our extensive network. ADO Yachts is a specialized maritime "Shipyard Liaison" Our services focus on new-build project management. Introduction fees are agreed upon and paid by the builder. We are not a brokerage and do not participate in the sale of used vessels.

⚠️ IMPORTANT NOTICE & LEGAL DISCLAIMER

Please be advised that all images, videos, and visual renderings featured on this page are for illustrative and conceptual purposes only. The media presented may not depict the actual vessel currently under construction or available for sale. These representations are intended to demonstrate the lifestyle and potential configurations of the Ultimate Catamarans series. Final specifications, finishes, toy layouts, and equipment are subject to the final build contract and shipyard engineering updates. Actual performance and storage capacity may vary based on owner-selected options and weight distribution requirements.