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Meaning of hull efficiency

hull' effi"ciency

Pronunciation: [key]
— Naval Archit. Naval Archit.
  1. the ratio of the quantity of work required to tow a certain hull at a given speed to that required to drive it with a certain propeller: used in propeller design.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.