The overall efficiency of a centrifugal pump is simply the ratio of the water (output). power to the shaft (input) power and is illustrated by the equation below. Î· = P W / P S where Î· is efficiency, P w is the water power, and P s is the shaft power.
While talking about difference between a ship and a boat, the first thing that comes to oneâs mind is their sizes. Traditionally people consider a ship as a large ocean going vessel, whereas boats are comparatively quite smaller in size.
Operational Areas. A major difference between ship and boat is that of their areas of operation. Ships are vessels that are operated in oceanic areas and high seas. They usually include cruise vessels, naval ship, tankers, container ships, RoRo ships, and offshore vessels.