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618 bytes added ,  21:20, July 12, 2007
A little bit of research - article rewrite.
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A '''Ship's bells''' are used to indicate time onboard ship. One bell sounds for each half hour. One bell means 12:30, two bells mean 1:00, three bells mean 1:30, and so on until 4:00 ("eight bells"). At 4:30 the cycle begins again with one bell.<ref>U.S. Department of Transportation Maritime Administration [http://www.marad.dot.gov/publications/glossary/glossary.html]</ref>
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A '''Ship's bells''' are used to indicate time onboard ship. One bell sounds for each half hour. Bells are rung in pairs to make it easier to count.<ref>http://www.boatsafe.com/nauticalknowhow/shipbee.htm</ref>  Thus, for a watch starting at 12:00, one bell means 12:30, two bells mean 1:00, two bells pause 1 bell means 1:30, and so on until 4:00 ("eight bells"). This cycle starts again for the next watch.
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The use of 30 minutes as the interval between bells originates from the use of a half hour glass to keep time.  Each half hour, the glass would be flipped and the appropriate count of the bell would be rung.<ref>http://www.history.navy.mil/faqs/faq83-1.htm</ref>
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{|border=1
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|-
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!Number of bells
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!colspan=3|Hour
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|-
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!One bell
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|12:30
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|4:30
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|8:30
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|-
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!Two bells
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|1:00
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|5:00
 +
|9:00
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|-
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!Three bells
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|1:30
 +
|5:30
 +
|9:30
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|-
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!Four bells
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|2:00
 +
|6:00
 +
|10:00
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|-
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!Five bells
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|2:30
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|6:30
 +
|10:30
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|-
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!Six bells
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|3:00
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|7:00
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|11:00
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|-
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!Seven bells
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|3:30
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|7:30
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|11:30
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|-
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!Eight bells
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|4:00
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|8:00
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|12:00
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|}
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==References==
 
==References==
 
<references/>
 
<references/>
 
[[Category:Shipping terms]]
 
[[Category:Shipping terms]]
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