Seamore 34: Antonini Navi’s First Fully Custom Superyacht

Seamore 34

On March 28, Antonini Navi launched the Seamore 34, a 34-metre full-custom steel superyacht, marking the shipyard’s first entry into the steel yacht segment under 500 GT. This milestone highlights Antonini Navi’s emergence as a serious player in the competitive world of bespoke steel yachts.

With a second unit nearing launch and a third already under construction, alongside collaborations with top design studios including Nauta Design, Fulvio De Simoni Yacht Design, and Hot Lab, Antonini Navi is rapidly establishing itself as a rising force on the international yachting scene.

The private launch ceremony, attended by the owner and family, featured the traditional blessing, emphasizing the significance of this moment for the entire shipyard team. The Seamore 34 is the first in a semi-custom line, offering owners wide freedom in design and configuration.

The project was developed entirely in-house, with interiors by Milan-based Hot Lab. The yacht emphasizes seamless indoor–outdoor flow: the main deck spans over 150 m², while the upper deck provides around 160 m² of outdoor space, designed for both socialising and active life on board.

Interiors blend classic and contemporary elements, with fine finishes, ribbed textures, antiqued glass surfaces, and pastel-lacquered panelling, creating a bright, harmonious, and sophisticated atmosphere that complements the relaxed yet refined lifestyle on board.

Antonini Navi is part of Gruppo Antonini, a La Spezia-based industrial group established in 1943, bringing decades of experience in steel construction and offshore platforms into yacht building. This expertise ensures high-quality craftsmanship, combining tradition, technical precision, and meticulous attention to detail in both hull construction and interior fit-out.

“The Seamore 34 represents a significant milestone for our family and our vision,” says Simone Antonini, founder and CEO. Co-founder and sales director Aldo Manna adds: “This yacht embodies our full-custom philosophy: every detail developed from scratch, focused entirely on the owner’s satisfaction, without compromise on quality or performance.”

The Seamore 34 will be presented at the upcoming 2026 boat shows, introducing the first model in a semi-custom range that Antonini Navi plans to expand in the coming years, setting new standards in the category of fully custom steel yachts.