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
Nautical Archaeology Society from an ancient engraving depicting nautical activity. The predecessor of the Nautical Archaeology Society was the Council for Nautical Archaeology (CNA). This was formed in 1964 initially under the name the Committee for Nautical Archaeology:""so as to ensure that the many discoveries being made by divers should not go by default through lack of contact with the appropriate learned bodies and to act as a channel of communication with the many interests that were growing up in this new field of research and exploration."" The inaugural meeting of the CNA was held in Joan du Plat Taylor's office at the