50m Thanuja on sea trials after two-year rebuild at Serenity Yachts

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50m Thanuja completes sea trials after two-year rebuild and extension

29 May 2024 • Written by Holly Margerrison

The 49.9-metre yacht Thanuja has successfully completed sea trials and will soon be delivered to her owner for the charter season in the Mediterranean. Originally built at Concept Marine and delivered as Greyzone, she was relaunched in September last year after an extensive two-year rebuild project at Serenity Yachts in Antalya, Turkey. 

Construction of the vessel began in 2021 and what started out as a refit ended up as a full-blown rebuild. The yacht was gutted and stripped down to bare metal and extended by eight metres with an entirely new interior and exterior layout, resulting in an increase in volume from 380 GT to 440 GT. Structural changes, in addition to the extension, also included a new aluminium superstructure and a new steel hull block, with design completed by German design and engineering firm iYacht.

On deck, the shipyard installed new stainless steel hardware and handrails with the teak decking entirely replaced, while the technical spaces were also redone with a new engine room, new equipment and new bow and stern thrusters. Pipes, cabling, engines and generators were all included in the rebuild effort.

Udo A. Hafner, CEO of iYacht commented on the project: “Thanuja holds a special importance for our studio. During the last 12 months, we have successfully delivered a wide range of projects, ranging from electric outboards to 50-metre superyachts, from sailing monohulls to power catamarans."

He continued: "Thanuja initially began as a simple refit but quickly evolved into a major conversion. Leveraging the extensive expertise of our studio we were able to support the owner and the yard in every phase. As the project complexity grew it required us to bring in additional expertise from different disciplines. We are proud to have been an integral part of this project, from the initial concept, exterior design, naval architecture”.

The interior was rethought and redesigned by German studio Katharina Raczek Design (KRD) and included both new guest and new crew areas. She can now accommodate up to 10 guests in five cabins with further space for a crew of seven. "Except for some fan coils and a few navigational units, everything was renewed," a spokesperson for the shipyard said.

The project was commissioned by a German owner who oversaw the design and engineering process together with David White and Zucker & Partners.

Thanuja is powered by a pair of MAN Engines and CAT C4.4 generator. 

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More about this yacht

Concept Marine   50 m •  2012

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