Propulsion Qualities

The following article is from The Great Soviet Encyclopedia (1979). It might be outdated or ideologically biased.

Propulsion Qualities

 

the performance characteristic of a vessel expressed by the ratio of the power expended in moving the vessel to the vessel’s dimensions and speed. The simplest quantitative index is the ratio of the product of a vessel’s displacement and its speed to the power of the vessel’s engine. This coefficient can be improved by reducing the resistance to the vessel’s motion, by increasing the propulsor efficiency, and by improving the flow of water to the propulsor. The propulsive coefficient is expressed as the ratio of the power supplied to the propulsor device (for instance, to a screw propeller) to the towing power of the vessel; in other words, this is the efficiency of the propulsor device in open water, taking into account the effect on its operation resulting from such factors as the ship’s lines and steering devices.

The Great Soviet Encyclopedia, 3rd Edition (1970-1979). © 2010 The Gale Group, Inc. All rights reserved.
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The TPU used to manufacture the Fab Force fins not only satisfied those concerns but also helped improve the speed, or snap, of the fins, which can increase their propulsion qualities.
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