The Nanni N13.900 CR3 is a high-performance marine inboard diesel engine based on a Scania engine platform, producing 900 CV (662 kW) from a 12.7-litre 6-cylinder inline configuration. It features Extra High Pressure Injection (XPI), turbocharging with after cooler, and is HVO compliant. Compatible with shaft line, water jet, and surface drive transmissions, it meets IMO Tier II and EU Stage IIIA emission standards.