The DFDE propulsion system uses either oil or gas, depending on the situation. It uses an electric motor like large cruise ships and submarines, not a steam turbine, which is the traditional ...

Two propulsion motors provide a ship speed of up to 13 knots with diesel-electric propulsion only. At the sea trials a speed of 13.7 knots was reached. The conversion from steam to gas turbines ...

Boilers in service in the older ships gave an evaporation of 140 Ib. of steam per hour per ton weight at an efficiency of 80–82 per cent; with improved water-tube boilers and preheaters, the ...

Over the years, ship propulsion has evolved from sail to steam to diesel and gas turbine engines. The U.S. Navy now is transitioning to all-electric ships, which will increase available power ...

In the latter few years, the Parsons steam turbine has been applied to the propulsion of ships with very satisfactory results, and bids fair, in the near future, ...

While modern cruise ships are designed to offer luxurious accommodations, fine food, and entertainment, they are relatively slow; cruise ship speeds only average around 20 knots (23 mph). A ...