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Bell from RMS Titanic An underwater archaeologist with the Lighthouse Archaeological Maritime Program in St. Augustine, Florida, recording the ship's bell discovered on the 18th-century Storm Wreck. A ship's bell is a bell on a ship that is used for the indication of time as well as other traditional functions. The bell itself is usually made ...
A ship's bell is used in concert with a watch system to indicate the time using bell strikes to mark the time and help sailors know when to change watches. 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.
The engineers hear the bell and move their handle to the same position to signal their acknowledgment of the order, and adjust the engine speed accordingly. Such an order is called a "bell"; for example, the order for a ship's maximum speed, flank speed, is called a "flank bell". [2]
bell See ship's bell. bell rope A short length of line made fast to the clapper of the ship's bell. bell buoy A type of buoy with a large bell and hanging hammers that sound by wave action. [26] below On or into a lower deck. below decks In or into any of the spaces below the main deck of a vessel. belt armor. Also armor belt.
The company produced its marine clocks entirely in-house, so these created revenue far more quickly. Under Pearson's guidance, Chelsea made numerous product design improvements, many of which it patented. These included the design for a ship's bell clock having a fully encased chime and striking mechanism, patented in 1900.
Time on a ship's clocks and in a ship's log had to be stated along with a "zone description", which was the number of hours to be added to zone time to obtain GMT, hence zero in the Greenwich time zone, with negative numbers from −1 to −12 for time zones to the east and positive numbers from +1 to +12 to the west (hours, minutes, and ...
A marine chronometer is a precision timepiece that is carried on a ship and employed in the determination of the ship's position by celestial navigation.It is used to determine longitude by comparing Greenwich Mean Time (GMT), and the time at the current location found from observations of celestial bodies.
The English word clock probably comes from the Middle Dutch word klocke which, in turn, derives from the medieval Latin word clocca, which ultimately derives from Celtic and is cognate with French, Latin, and German words that mean bell. The passage of the hours at sea was marked by bells and denoted the time (see ship's bell). The hours were ...