Monaco, March 26th 2026, The Superyacht Eco Association SEA Index® is proud to announce that NANNI has joined its circle of SEA Index Allies, reinforcing a shared ambition: advancing a more responsible, innovation‑driven, and action‑oriented yachting industry.
This alliance brings together the technical excellence of NANNI and the environmental leadership of the SEA Index®, combining expertise to meaningfully reduce the environmental footprint of yachts and support the sector’s transition from measurement to concrete action.
Developed by the Yacht Club de Monaco, the SEA Index® has become a leading framework for independent, scientifically verified environmental certification for superyachts. Its ambition is clear: help the sector move from metrics to measurable improvements, supporting owners, shipyards, marinas, and technology partners in adopting more sustainable solutions.
With its new status as SEA Index Ally, NANNI contributes advanced marine propulsion and onboard innovations designed to improve energy efficiency, reduce emissions, and prepare the industry for a new generation of cleaner maritime technologies. Among the key areas where NANNI is accelerating progress.
Complete Marine Package composed by:
These advanced systems represent the forefront of solutions for reducing emissions, onboard noise and overall environmental impact. They include:
The above innovations have already been successfully deployed across multiple real‑world projects, including Life Mystic, developed in partnership with Sanlorenzo. SEA Index® has also CO₂‑rated the Sanlorenzo Almax 50 m steel yacht, equipped with a methanol reformer, which earned a 3‑star rating, demonstrating the viability of next‑generation propulsion pathways.
Together, these solutions, Life Mystic, HVO implementation, Soundless technology, the EODEV collaboration and hybrid/next‑gen propulsion systems—showcase concrete, proven progress toward cleaner and more efficient yachting.
This strengthened collaboration showcased internationally on 24 March 2026, during the 30ᵗʰ edition of the Captains’ Forum, held within the framework of “Monaco, Capital of Advanced Yachting.”
NANNI took part in the high‑level panel:
“From certification to action: tools for more resilient yachting.”
The discussion focused on:
During the session, Giammario Meloni, Director of Commercial and Defense Sales for the Mediterranean, presented NANNI’s most recent innovations aimed at reducing the environmental impact of engines and onboard equipment.
“Welcoming NANNI as a SEA Index Ally further reinforces our collective capacity to drive meaningful and lasting transformation within the yachting industry. Innovation is no longer confined to engine manufacturers. It is now reaching equipment specialists, including generator makers such as Nanni, which is a clear sign that sustainability is permeating every layer of the maritime supply chain. This momentum echoes the pioneering spirit we see each year at the Monaco Energy Boat Challenge, where new technologies first take shape before spreading through the industry. Nanni’s engineering excellence and commitment to practical innovation are fully aligned with the SEA Index® mission and long-term roadmap.”
— Bernard d’Alessandri, General Secretary, Yacht Club de Monaco
Quote from NANNI
“Joining the SEA Index program represents an important milestone for NANNI. We believe that technological innovation must translate into measurable environmental progress, and the SEA Index provides the scientific and operational framework needed to make this transition real. Through this partnership, we aim to provide yacht owners, captains, and shipyards with effective and scalable solutions that elevate the standards of clean and responsible yachting.”
— Gregorio Passani, Chief Business Officer and General Manager, NANNI.
Founded in 2020 by the Yacht Club de Monaco and Credit Suisse (UBS Group), the SEA Index® develops scientifically rigorous environmental certifications for superyachts. Verified by independent third parties, the SEA Index® is a cornerstone of the “Monaco, Capital of Advanced Yachting” initiative, is present in 23 ports, marinas worldwide and supports the sector’s transition toward more sustainable operations.
Established in 1952, NANNI stands as a leading international OEM manufacturer of marine engines and gensets. The company delivers advanced power solutions for the marine industry, from commercial vessels to superyachts.
Renowed for its reliability, high performance and comfort-oriented design, NANNI operates two production facilities in France and Italy. The company is strongly committed to driving the maritime industry’s transition toward cleaner, more efficient propulsion systems, investing continuously in R&D and sustainable innovation.
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