The Nanni N6.325CR2 is a 6-cylinder inline, 4-stroke diesel marine engine producing 325 HP (239 kW) with a 6.8-litre displacement based on a John Deere engine base. It features direct injection with high-pressure Common Rail fuel system, turbocharged air-to-seawater aftercooling, and closed cooling with heat exchanger. Compatible with shaft line, water jet, and surface drive transmissions, and compliant with RCD2, EPA Marine Tier 3, and IMO Marpol Annex VI emissions standards.