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- Rule_of_twelfths abstract "The rule of twelfths is a rule of thumb for estimating the height of the tide at any time, given only the time and height of high and low water. This is important when navigating a boat or a ship in shallow water, and when launching and retrieving boats on slipways on a tidal shore.The rule assumes that the rate of flow of a tide increases smoothly to a maximum halfway between high and low tide before smoothly decreasing to zero again and that the interval between low and high tides is approximately six hours. The rule states that in the first hour after low tide the water level will rise by one twelfth of the range, in the second hour two twelfths, and so on according to the sequence - 1:2:3:3:2:1.".
- Rule_of_twelfths thumbnail Rule_of_twelfths.PNG?width=300.
- Rule_of_twelfths wikiPageID "2385382".
- Rule_of_twelfths wikiPageRevisionID "593215229".
- Rule_of_twelfths hasPhotoCollection Rule_of_twelfths.
- Rule_of_twelfths subject Category:Rules_of_thumb.
- Rule_of_twelfths subject Category:Tides.
- Rule_of_twelfths type Abstraction100002137.
- Rule_of_twelfths type Cognition100023271.
- Rule_of_twelfths type Concept105835747.
- Rule_of_twelfths type Content105809192.
- Rule_of_twelfths type Event100029378.
- Rule_of_twelfths type Guidepost105848541.
- Rule_of_twelfths type Happening107283608.
- Rule_of_twelfths type Idea105833840.
- Rule_of_twelfths type PeriodicEvent107296190.
- Rule_of_twelfths type PsychologicalFeature100023100.
- Rule_of_twelfths type Rule105846054.
- Rule_of_twelfths type RulesOfThumb.
- Rule_of_twelfths type Tide107402519.
- Rule_of_twelfths type Tides.
- Rule_of_twelfths type YagoPermanentlyLocatedEntity.
- Rule_of_twelfths comment "The rule of twelfths is a rule of thumb for estimating the height of the tide at any time, given only the time and height of high and low water.".
- Rule_of_twelfths label "Rule of twelfths".
- Rule_of_twelfths sameAs m.07883n.
- Rule_of_twelfths sameAs Q1241829.
- Rule_of_twelfths sameAs Q1241829.
- Rule_of_twelfths sameAs Rule_of_twelfths.
- Rule_of_twelfths wasDerivedFrom Rule_of_twelfths?oldid=593215229.
- Rule_of_twelfths depiction Rule_of_twelfths.PNG.
- Rule_of_twelfths isPrimaryTopicOf Rule_of_twelfths.
