Centre of flotation

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Centre of Flotation

The centre of flotation (CF) is the centroid of the waterplane, as located by the longitudinal centre of flotation (LCF) and transverse centre of flotation (TCF).

Working with the CF

  • For small angles (i.e., <10 degrees), the vessel can be thought of as trimming about the LCF (successive waterplanes pass through the CF)
  • When presenting a single draft value, it is usually considered at the CF.
  • Load lines are considered for LCF draft (though the plimsoll mark is situated at midships).
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