Antonini Navi launches its first full-custom steel yacht
Antonini Navi has launched the 34-metre full-custom steel superyacht, Seamore 34, the first yacht built at its La Spezia yard.
The launch marks the brand’s entry into the steel superyacht segment under 500 GT, a market dominated by major Italian and northern European shipyards.
The Seamore 34 signifies what will become a semi-custom line for the shipyard. There is a second unit already nearing launch and a third under construction.
The private launch ceremony on 28 March was attended by the owner and his family.
The Seamore 34 concept was developed in-house by Antonini Navi, while the interiors are by well-known Milan-based firm Hot Lab.
Antonini Navi forms part of Gruppo Antonini. The brand is expanding other ranges in its portfolio. In 2025, the brand launched a new model in its sport utility yacht (SUY) range with the introduction of the SUY110, following the larger SUY135.
Simone Antonini, the shipyard’s founder and CEO, says: “The launch of the Seamore 34 achieves a significant milestone for our family on a journey we began several years ago, one that was strongly backed by myself and my son Walter, who is now the shipyard’s general director. Antonini Navi is the tangible manifestation of our ability to turn a vision into a real product. Construction has always been part of our DNA, and this will continue into the future.”
Co-founder and sales manager, Aldo Manna, adds: “The Seamore 34 is the concrete embodiment of our approach to full-custom yachts: the ability to develop every product from a blank sheet, supported by a solid, well-organised technical office, and by a problem-solving mindset focused on the sole goal of the owner’s full satisfaction.
“This yacht has been designed to be reliable, functional and fully adaptable to the customer’s needs, without compromising on performance and build quality. At the same time, it showcases the skill and organisation of our production department, which has successfully translated the design into a beautifully built, high-quality yacht.
“The launch of the Seamore 34, the first yacht designed and built by Antonini Navi, marks our entry into a highly competitive segment, where we have positioned ourselves as a credible and capable alternative to other steel yacht builders working in this category.”
The Seamore 34 will be on display at the upcoming 2026 boat shows.
