Watchstanding regulate the sailors' duty watches and for other purposes (see main article). Unlike civil clock bells, the strikes of a ship's bell do not accord to the number of the hour. Instead, there are eight bells, one for each half-hour of a four-hour watch. Bells would be struck every half-hour, and in a pattern of pairs for easier counting, with any odd bells at the end of the sequence. Watchstanding Watchstanding, or watchkeeping, in nautical terms concerns the division of qualified personnel to operate a ship continuously. On a typical seafaring vessel, be it naval or merchant, personnel keep watch
Revere bells existing bells as models for his own, as he had no scientific understanding of how to optimize their shape. However, after experimentation and working with masters in the craft, Revere eventually produced bells praised for their pleasant sound. Joseph Warren Revere claimed that "we know we can cast as good bells as can be cast in the world, both for goodness and for sound." The ability to cast items as large as bells led to the development of other areas of Revere's business. The establishment of his foundry started a paradigm shift as he realized his "air furnace" could be