: a grooved wheel or pulley (as of a pulley block) sheave. verb. \ ˈshēv \ sheaved; sheaving.

What is a sheave on a ship?

In sailing, a sheave is a single or multiple pulley. One or a number of sheaves are enclosed in an assembly between cheeks or chocks. … A line (rope) is reeved through the sheaves, and maybe through one or more matching blocks at some far end, to make up a tackle.

How is pulley sheave measured?

To be more precise, you can wrap a string tightly around the flat of the pulley where your belt rides. Mark the string where they overlap, then measure its length. Divide that number by 3.14.