Ship engines are at most 50% efficient[1]. Still a away to go though. [1] https://www.nuclear-power.net/nuclear-engineering/thermodynamics/thermodynamic-cycles

Ship engines are at most 50% efficient[1]. Still a away to go though. [1] https://www.nuclear-power.net/nuclear-engineering/thermodynamics/thermodynamic-cycles/diesel-cycle-diesel-engine/thermal-efficiency-for-diesel-cycle/ https://www.nuclear-power.net/nuclear-engineering/thermodyna...