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# Question about Squat vs Block Coefficient

## Question about Squat vs Block Coefficient

(OP)
https://www.myseatime.com/blog/detail/5-questions-...

Block coefficient is defined as the volume of the ship displacement at present draft, divided by the volume of a rectangular block encapsulating the vessel at that same draft.

Squat is then calculated as a function of block coefficient.

Question:

Wouldn't squat affect the "present draft" of the vessel, thereby changing the block coefficient?

Hydrology, Drainage Analysis, Flood Studies, and Complex Stormwater Litigation for Atlanta and the South East - http://www.campbellcivil.com

### RE: Question about Squat vs Block Coefficient

I've always assumed the depth at mid length would be the relevant depth for block coefficient. That formula for squat looks too good to be true, I suspect it only applies to a subset of hull shapes.

Cheers

Greg Locock

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### RE: Question about Squat vs Block Coefficient

(OP)
Even presuming the formula works, though, doesn't the squat increase the draft?

Hydrology, Drainage Analysis, Flood Studies, and Complex Stormwater Litigation for Atlanta and the South East - http://www.campbellcivil.com

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