Sirena sells its first steel 42m before its Monaco debut
A spec-built 42m sold before its Monaco premiere
Sirena Marine has sold the first hull of the Sirena Superyachts 42M ahead of the model's world premiere at the Monaco Yacht Show, which runs from 23 to 26 September 2026. The 42.2m yacht is the largest the Turkish builder has produced and its first with a steel hull and aluminium superstructure. It measures about 433 GT and accommodates 10 guests in five staterooms, with exterior lines by Luca Vallebona, interiors by Hot Lab and naval architecture by Van Oossanen, which fitted the hull with its Fast Displacement Hull Form and a Hull Vane foil.
Construction began on spec in 2024 at the builder's Yalova yard near Istanbul, and the boat found an owner while still under construction. The model is listed at 23.95m euros with Northrop and Johnson as central agent. Sirena described the deal as an in-house sale to an experienced owner. Its chief commercial officer, Ali Onger, said the sale confirmed that 'our approach to building modern, highly capable superyachts resonates with experienced owners.'
A sub-40m production yard steps up in size
Sirena built its name on sub-40m production and semi-custom motor yachts, a range that tops out around 27 metres. The 42M is its first move above 40 metres and its first steel build. To make room, the company has leased waterside halls at Yalova, adding roughly 150,000 square metres of space and lifting its workforce toward 1,200 people, with the larger yacht concentrated there.
Selling the debut hull before any public showing removes the financial exposure a spec build normally carries and books the yard's first slot at the top of its range. In a segment where buyers have turned patient, late-model turnkey tonnage in the 30 to 45m band still commands the firmest prices. A hull that can deliver soon, from a builder with an existing owner base, is the profile buyers have been paying up for.
Turkey's yards keep climbing the size ladder
The sale lands as Turkey holds a place among the top building nations in BOAT International's Global Order Book, behind Italy and the Netherlands on most measures, even after national order intake cooled from its 2024 peak. Turkish yards have long led the sub-40m and explorer niches on price and build quality. Steel superyachts above 40 metres put them into more direct competition with established Italian and northern European houses.
For an owner, the value line is the point. A steel 42m that pairs Dutch naval architecture and Italian styling with a sub-40m production builder's cost base sits apart from a comparable Italian or Dutch new build, and the first hull is already committed. What Monaco will test is whether the second and third slots move as quickly, and whether the rest of a fleet still rooted below 40 metres follows the flagship upward.