The excitement is palpable in the world of luxury maritime travel as Sirena Marine prepares to unveil its inaugural steel-hulled megayacht—the Sirena Superyachts 42M. Scheduled for an international debut in just a couple of months, this yacht marks a significant milestone for the shipyard. Recently sold, it’s not just another yacht; its christening ceremony promises to be a grand affair with the owners present, celebrating both the yacht itself and its new chapter.
This landmark yacht is the largest ever built by Sirena Marine, featuring a design that sets the stage for the brand’s future in the competitive megayacht segment. Ali Onger, the company’s chief commercial officer, articulates the achievement’s significance: “It is confirmation that our approach to building modern, highly capable superyachts resonates with experienced owners.” He further emphasizes the importance of the sale in showcasing the strong relationships formed with clients, hinting that the new owner may have transitioned from a smaller Sirena yacht, underscoring customer loyalty and brand trust.

The decision to venture into the megayacht market came with confidence from Sirena, intending to introduce fresh designs and innovative approaches. The Sirena Superyachts 42M construction commenced in 2024 on speculation and represents one of three new models planned by the brand (the others being the Sirena 35M and Sirena 50M, which are yet to start.). All models share a common thread of steel hull construction complemented by aluminum superstructures, with stylistic ingenuity contributed by designer Luca Vallebona. While the shipyard sought a sporty and open profile, Vallebona’s creative vision integrated architecturally striking features, including an exclusive patio-like alfresco area on the main deck for owners. This clever design allows access to the upper deck via a discreet stairway, eliminating the need for owners to navigate through the interior spaces.
Although specific details regarding the interior décor remain undisclosed, the artistry is expected to be in the capable hands of Hot Lab, renowned for their luxurious designs. Prioritizing natural materials and inviting curves, their approach aims to create a serene and welcoming environment onboard the Sirena Superyachts 42M.

The naval architecture behind this impressive vessel is crafted by Van Oossanen Naval Architects, known for their cutting-edge designs and performance optimization. Utilizing the Fast Displacement Hull Form and Hull Vane foil technology, the yacht promises increased efficiency—though specific details on the propulsion system and expected performance metrics remain under wraps.
For those eager to witness the culmination of this ambitious project firsthand and engage in discussions about future endeavors, Sirena Marine will showcase the Sirena Superyachts 42M at the Monaco Yacht Show. This prestigious event will serve not only as a platform to present this landmark yacht but also as an opportunity for potential clients to explore their own marine aspirations.
To learn more about the collaborators behind this remarkable yacht:
Hot Lab hotlab.it
Luca Vallebona lucavallebona.com
Sirena Yachts sirenayachts.com
Van Oossanen Naval Architects oossanen.nl

More About the Sirena Superyachts 42M
LOA: 138’5” (42.2 meters)
Beam: 28’9” (8.8 meters)
Draft: 6’7” (2.5 meters)
Guests: 10 in 5 staterooms
Engines: not specified
Range: not specified
Builder: Sirena Marine
Stylist: Luca Valbona
Naval Architect: Van Oossanen Naval Architects
Interior Designer: Hot Lab