I am a writer based in the UK, i recnetly wrote about modern marine engines and how they are evidence of how far material science and engineering have come. Titanium alloys and carbon fibre composites are two examples of the modern, lightweight materials used in manufacturing. These materials have a dual purpose: they lighten the engine, which improves fuel efficiency, and they make engine parts more resistant to the severe marine environment, which means they last longer. Control and Monitoring Systems that are Digital. The use of digital technologies has completely altered the process of controlling and monitoring marine engines. Engine performance data is continuously gathered by sensors and electronic control units (ECUs) in modern marine engines. With this information, the engine can be fine-tuned in real-time for maximum performance in any environment.