Boats are propelled forward by various power sources, such as human power, wind power, and internal combustion engines. Nowadays, even electric boats are coming onto the scene. Propulsion for ...

A research team in Shanghai says it has developed a new pump-jet propulsion system that can give submarines a higher thrust while reducing noisy vibrations by more than 90 per cent. Some modern ...

Ultra-quiet pump-jet propulsion technology was a key selling point in the subs' design It was supposed to help make the subs "the world's most advanced conventionally powered submarine" Executive ...

Submarine propeller designs are highly classified due to their critical role in acoustic stealth and survivability.