Antonini Navi Launches Seamore 34

The design of Antonini Navi’s 112-foot Seamore 34 prioritizes indoor-outdoor continuity and was developed in-house with interiors by Milan-based Hot Lab. Courtesy Antonini Navi

Italian builder Antonini Navi has launched its first full-custom yacht, the 112-foot Seamore 34, marking a significant step into the competitive sub-500 gross-ton steel superyacht segment.

Built at the yard’s La Spezia facility, the Seamore 34 is conceived as both a one-off project and the foundation for a future semi-custom series. The steel-and-aluminum platform emphasizes flexibility, giving owners broad latitude in layout and configuration while maintaining a robust, engineering-driven backbone.

The design, developed in-house with interiors by Milan-based Hot Lab, prioritizes indoor-outdoor continuity. On the main deck, more than 1,600 square feet of living space flows from stern to bow through sliding glass panels, while the upper deck offers roughly 1,700 square feet of open-air social areas. Inside, a mix of ribbed textures, antiqued glass and softly lacquered finishes creates a relaxed, contemporary atmosphere.

The launch comes as Antonini Navi builds momentum, with additional hulls already in progress and collaborations underway with leading design studios. The Seamore 34 is expected to make its public debut on the 2026 boat show circuit.

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