The Sirena 42M features exterior design by Luca Vallebona with interiors by Hot Lab and naval architecture from Van Oossanen Naval Architects. Built by Sirena Yachts on a fast-displacement steel hull with an aluminium superstructure, she offers 434GT of internal volume and has been developed for extended cruising.
A new flagship for Sirena Yachts
The Sirena 42M is the first model in the builder's new superyacht range and represents a significant step up from its established semi-displacement portfolio. First revealed in 2022, the semi-custom yacht showcases a contemporary profile with long horizontal glazing and a fast displacement hull developed for efficient long-range cruising. The platform also allows owners to personalise layouts and onboard spaces to suit their cruising style. Visitors to the Monaco Yacht Show 2026 will have the opportunity to explore these design features first-hand when the yacht makes her public debut.
Outdoor living designed around the sea
One of the yacht's standout features is a private sunken foredeck patio connected directly to the owner's suite, with space for an optional jacuzzi, pergola and lounge area. At the stern, a tiered beach club incorporates a central pool, fold-down bulwarks and a generous swim platform, while the flybridge features flexible seating, sunpads and shaded dining. Storage for tenders and water toys supports extended cruising and watersports.
Bright interiors for extended cruising
Hot Lab's interior uses natural oak, beech, soft fabrics and subtle metallic finishes to create a calm, light-filled living environment. Accommodation onboard the motor yacht is arranged for ten across five guest cabins, with a configurable owner's suite that can be positioned either forward on the main deck or on the upper deck, while dedicated crew quarters accommodate up to nine.
According to YachtBuyer MarketWatch, Sirena Yachts currently has 4 yachts in the order book.
Alongside the new flagship, the recently launched Sirena 118 will make her world debut at the Cannes Yachting Festival 2026 as one of the builder's largest fast-displacement models. Elsewhere in the range, the Sirena 48 continues to offer owners a compact long-range cruising yacht with a semi-displacement hull, generous interior volume and Sirena's signature indoor-outdoor living spaces.
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© Jeff Brown
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