Designed by Luca Vallebona, with interiors by Hot Lab (The Viken Group), naval architecture by Van Oossanen Naval Architects and engineering by Eureka Yachts, the new Sirena 42M is the yard's largest and most ambitious project to date.
Interior design by Hot Lab takes a calm, understated approach, using natural beech and oak finishes alongside titanium-effect metal detailing, textured fabrics and subtle planting to create a warm yet contemporary atmosphere. Large windows run throughout the main and upper decks of the Sirena yacht, filling the living spaces with natural light while maintaining uninterrupted views outside.
The sale of the Sirena Superyachts 42m before her world premiere is more than a commercial success; it is confirmation that our approach to building modern, highly capable superyachts resonates with experienced owners."
Chief Commercial Officer
Sirena Marine
The layout has been designed to remain flexible rather than overly formal. The main saloon flows directly onto the aft exterior lounge through a minimal level change, strengthening the relationship between indoor and outdoor living. Forward spaces can be configured as either formal dining or more relaxed social areas, while an additional room can serve as a lounge, games room or private office depending on the owner's preferences.
Among the yacht's most notable features is a private sunken foredeck terrace connected directly to the owner's suite. This secluded space can be equipped with a plunge pool or jacuzzi, shaded pergola and landscaped planting, creating a private outdoor retreat rarely seen aboard a yacht of this size. A curved staircase links the terrace with the upper deck while preserving openness through carefully positioned glazing.
At the stern of the motor yacht, the social areas are arranged across several stepped levels. Fold-down bulwarks expand the beach club at the water's edge around a central swimming pool, while a glass transom maintains uninterrupted views aft. Above, the spacious flybridge offers flexible seating, sunpads and a shaded dining area designed for entertaining throughout the day.
Accommodation is arranged for up to 10 guests across five cabins, with multiple layout options available. Owners can choose to position the master suite either forward on the main deck or on the upper deck, with the forward arrangement providing direct access to the yacht's private foredeck terrace. Guest accommodation occupies the lower deck and includes two generous VIP cabins designed to maximise available beam while preserving privacy.
Naval architecture by Van Oossanen Naval Architects centres on the firm's Fast Displacement Hull Form, developed to deliver efficient cruising across a broad speed range while maintaining stability and interior volume. The superyacht pairs her steel hull with an aluminium superstructure and twin-screw propulsion to prioritise long-range capability over outright speed. The Sirena 42M has a reported top speed of 15 knots and cruises comfortably at around 10 knots.
According to YachtBuyer MarketWatch, the largest yacht database in the world, the first Sirena 42M superyacht had a last know asking price of €23,950,000.
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The flagship's sale comes during a significant period of growth for the Turkish builder. Alongside preparations for the Sirena 42M's Monaco Yacht Show premiere, Sirena is also preparing to introduce its new 36-metre Sirena 118 at the Cannes Yachting Festival 2026. Together, the two models represent the next stage of the company's expansion into the larger yacht market, with the Sirena 118 broadening its composite range while the Sirena 42M establishes the brand's presence in the steel superyacht sector.
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