Ship Squat Calculator


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An excel spreadsheet for ship squat calculation

  • Squat is the sinkage of ship as it moves in shallow water
  • Squat = combined sinkage + trim
  • This spreadsheet provides two methods: 1. DNV, 2. Barrass
  • Can be used for both open water and confined channel situations
  • It also advises the maximum speed possible to obtain the minimum underkeel clearance (UKC)
  • It also generates a curve of UKC vs Ship speed
  • Useful in navigation operations and in pilotage at ports
  • Available ONLY in SI Units!

Q. Can it calculate the squat for confined channels?

A. Yes, please use the Barrass formula for confined channels.

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