The Nanni N13.510 CR2 is a 6-cylinder in-line, 4-stroke diesel marine engine based on a John Deere engine base, displacing 13.6 litres and producing 507 CV (373 kW). It features electronically controlled unit injectors, turbocharged air-to-seawater aftercooling, and a closed cooling system with heat exchanger. The engine is HVO compliant and meets RCD2, EPA Marine Tier 3, IMO Marpol Annex VI, and NRMM Tier 3 emission standards.