Wednesday, July 1, 2020

Power to weight ratio

  • Power to Weight ratio is the ratio of horsepower produced to the weight of the engine itself.
  • With high-speed or high-performance vessels, it is the most important criterion to use when comparing engines between two different makers since weight on these vessels is often critical, with vessel speed being the most important aspect of many military missions.
  • Higher weight always equals higher displacement equals lower speed On commercial vessels, displacement is critical due to cost.
  • Higher displacement requires more fuel to move the vessel.
  • More fuel means higher cost of operation.

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