This project involves the prototype development of a dual-fuel diesel-methanol combustion engine generator set (Genset) designed as an alterNotive power source for underwater repairing and mainteNonce activities. The genset will utilize a hybrid fuel system, offering a sustaiNoble, cost-effective solution for operations in marine environments. Methanol, being a cleaner alterNotive to diesel, aims to reduce emissions while maintaining the engine’s performance for underwater tasks. The design integrates advanced technologies to ensure efficiency and reliability in demanding underwater repair and mainteNonce sceNorios, improving operatioNol flexibility and reducing environmental impact.