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Home > Articles > Sunreef 43M Eco: Hull Unmoulding Marks Major Milestone in Revolutionary Yacht Build

Articles Sunreef 43M Eco: Hull Unmoulding Marks Major Milestone in Revolutionary Yacht Build

Project Manager Thomas Carey and Captain Jim Thom reflect on the progress of this fascinating new build.

Currently under construction with Ocean Independence as project managers and Owner representatives, the first of the Sunreef 43M Eco series has reached a pivotal milestone with the unmoulding of its hull at the shipyard’s Gdańsk facility. This achievement heralds an acceleration in the construction of Sunreef’s largest yacht built to date, and what promises to be one of the most eco-friendly superyachts ever created.

To understand more about the current status of the build, and what the future holds for this unique yacht, we sit down with project manager Thomas Carey and Captain Jim Thom.

Pioneering Construction Methods

The yacht’s 1,700-square-metre composite hull represents the largest single-shot infusion ever achieved in the yachting industry. This sophisticated process, which forces resin through dry fibreglass and coring materials under vacuum pressure, yields a structure that’s both lighter and more robust than traditional methods, while dramatically reducing volatile organic compound emissions.

“This isn’t merely about scale—it’s about precision engineering at its finest,” notes Thomas. “The quality control throughout has been exemplary. With the hull unmoulded, on first inspection the surface finish has exceeded expectations, even before final preparation for paint.”

Sunreef 43M Eco Hull inspection Sunreef 43M Eco hull

A Complex Choreography

The unmoulding process was an intricate two-week operation, showcasing Sunreef’s technical prowess. Their mould design, intended to be reused for future series production, required methodical disassembly in sections.

But it’s Sunreef’s modular construction approach that has particularly impressed Thomas. “The efficiency is remarkable,” he notes. “We left the shipyard one evening, and by the next morning, four prefabricated bulkheads, with all penetrations, were already fitted in position. This modular approach extends throughout the build – different elements progressing simultaneously.”

For a first-in-series vessel of this complexity, such efficiency streamlines Ocean Independence’s quality control process. “The coordinated workflow makes our oversight more effective,” Thomas adds. “Seeing this level of organisation on such a groundbreaking project is particularly gratifying.”

Sunreef 43M Eco craned out of shed

A Captain’s Perspective

Captain Jim, whose extensive global cruising and experience sailing in extreme latitudes made him the perfect fit for this role, brings valuable insight to the project. When asked about the places he’s sailed, it soon became clear if we listed them all, we would fill a book—so it’s easier to name the one sea he hasn’t explored: the Sea of Japan. This extensive experience aligns perfectly with the Owner’s vision for genuine exploration. “It’s great to work with an Owner who’s so adventurous,” Jim shares. “It will be exciting to get to the sea trial phase, understand the limits of the boat, and then use it for what it was intended.”

One feature that stands out to Jim is the cutting-edge electric systems on board the 43M Eco. “The electric systems make this yacht something special,” he notes. “The environmental benefits are profound, and the silence under power and at anchor will add another dimension to the experience in remote destinations.”

While construction progresses, Jim has worked alongside the Ocean Independence management team to ensure the entire build process is seamless, focusing on all aspects including ancillaries. “We’re getting all the details right early,” he says. “Tender, toys, equipment – it’s all being lined up well ahead of completion.”

Having joined the project eight months ago, Jim highlights how the Ocean Independence management team’s “thorough approach to project management has streamlined everything from quality control and interior design to crew selection and maintenance planning.”

Sunreef 43M Eco hull construciton

Looking Ahead

With the hull now unmoulded, construction enters an exciting new phase after two years of meticulous planning and design refinement. The project’s momentum is building rapidly, thanks to Sunreef’s modular construction approach that enables concurrent installation of bulkheads, technical systems, interiors, and decks in quick succession.

“The efficiency of the build process now becomes evident,” Thomas explains. “What began as comprehensive design discussions two years ago is now materialising at an impressive pace. The shipyard’s approach allows us to progress multiple aspects simultaneously, it’s our job to bring every element together.”

Captain Jim, orchestrating preparations for future global adventures, emphasises the comprehensiveness of Ocean Independence’s management: “The support extends far beyond construction oversight. We’re already ordering spares and implementing maintenance schedules—essential groundwork for the kind of cruising we have planned.”

Sunreef 43M Eco hull moved by crane

As Ocean Independence guides this project toward completion, the Sunreef 43M Eco stands poised to redefine sustainable luxury yachting. For more information on future hulls in this or other Sunreef series, don’t hesitate to contact us.

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