Also known by her build number, Project 13759, the Lürssen yacht is notable not only for her scale and futuristic profile but also as the shipyard's first superyacht to feature methanol-powered fuel-cell technology.
Pushing Toward Launch
The motor yacht was first seen outside in March 2023 during her technical launch at the same facility, before being moved to Kiel for outfitting. She has since returned to Rendsburg for final works ahead of delivery.
Recent images taken at the shipyard show her profile emerging in near-complete form, with key design elements now clearly visible.
Marc Newson’s Exterior for Project Cosmos
Project Cosmos features a striking exterior design by Marc Newson, best known for his work on the Apple Watch. The result is a bold, streamlined yacht with an emphasis on sculpted surfaces and symmetry. A rounded glass observation pod sits prominently at the bow, while extensive black glazing stretches across her superstructure, creating a visual contrast that highlights her smooth, aerodynamic lines.
Built with a steel hull and aluminum superstructure, the yacht displays a clean, uncluttered silhouette. The expansive foredeck appears configured to accommodate a helipad, while the aft section features a large pool and a recessed cut-out hinting at the presence of a sportfisher tender.
This requirement is reminiscent of the 126m (414ft) explorer yacht Octopus, which carried both a 19-metre Vikal tender and a 19.2-metre submarine named Pagoo on board. In contrast, Project Cosmos stores her tender externally rather than in a dedicated internal bay. Both yachts are geared toward exploration and designed to operate independently, without the need for a support vessel. In this case, the decision to store the tender on deck is likely due to height constraints imposed by the sportfisher’s tuna tower, which would have made internal storage impractical.
With a beam of 18 meters and an estimated gross tonnage of 6,300 GT, Project Cosmos offers substantial space across all decks. The design incorporates generous glass surfaces throughout, creating strong visual connections to the sea and surroundings. Her internal volume also qualifies her for inclusion in the YachtBuyer YB100 ranking, which ranks the world's biggest yachts by gross tonnage rather than length - providing a more accurate reflection of onboard volume and capability.
Fuel-Cell Power System
Beneath the surface, Project Cosmos is equipped with a fuel-cell propulsion system powered by methanol. The technology is built around modular stacks of bipolar plates and membrane electrode assemblies, designed to generate electricity efficiently with minimal maintenance.
The system enables the yacht to operate with zero emissions at anchor for up to 15 days or undertake slow-speed cruising for up to 1,000 nautical miles. This capability not only reduces environmental impact but also meets the latest regulatory demands for emission control. The fuel-cell integration extends beyond the engine room, with methanol supply lines, ventilation systems, and electrical infrastructure all designed to support safe and reliable operation.
Speaking in 2021 when the technology was first announced, Peter Lürssen highlighted its efficiency: “Fuel cells have very little maintenance and are more efficient than a diesel engine, which is already a very efficient way to produce power.”
According to YachtBuyer Market Watch, the world's largest yacht database, Lürssen currently has 14 yachts either in build or on order.
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