Ship Squat Effect - Maritime Shorts

Ship squat effect is the decrease in under keel clearance of the ship because of a ship moving in shallow water.

There are 3 main factors that affect Squat -
Speed of the ship
Block coefficient
Blockage factor of the canal

Squat must be taken into consideration when calculating the under keel clearance of the vessel.

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[thiagomaiavt]

Squat is also increased by:
- Greater acceleration rate
- Meeting/passing situations
- Vessel roll
- It's function of the square of velocity. Double the velocity and get 4x squat

[sahilsharma-xpiy]

Block coefficent and speed of the vessel.
Both are directly proportion to squat effect.

[mdmehedihasan-yj]

The three main factor that effect squate : 1) Speed of the ship. 2)Block Coefficient. 3)Blockage factor of canal.

[adrianmacschannel]

These videos are fantastic, and help interested amateurs to understand these complex dynamic effects and how mariners need to be on constant lookout!! I remember reading once that the Bernoulli Effect had a domestic impact because the wind blowing across the top of chimney-pots (…my house is a 4 story Victorian terraced house in London with 10 (now unused) fireplaces.) causes low pressure in the chimney pots and that draws my warm air up through the fireplaces and chills the house with cold air drawn in from outside.

[LVrJ]

Also angular momentum caused by the propeller thrust.

[jjrdias]

Always amazingly informative content, and always easy to grasp.
Thank you

[hakimhakim-tuwk]

the type of bow and the position of the longitudinal centre of buoyancy are the other factors affecting squat

[MonikaKumari-rfdw]

When Cb is > 0.7 more squatting will be experienced at bow if < 0.7 then more squatting will be experienced at the stern of the vessel

[CARLOSAPOLINARIORODRIGUEZ]

Excelente explicación de este importante y peligroso efecto, sobre todo para los bulck-carriers.

[dreambigwav]

just had it on my classes today. also less saline water could cause it and ofc water temperature increase

[nanduas]

Initially ship sinks little to compensate low pressure, even after that ship is pushing water ahead does it cause the same low pressure and causes the ship to sink more

[TwoWheelsCraft]

When I swim in deep water its effortless but not in shallow water. Now I know why...

[عبداللهعبدالله-جوف]

what's the cursing speed of ship and how calculated for any ship and range of speed

[OkalayaYT]

Isn't this the same as the ground effect in F1?

[giannis.]

is it possible to have squat to the bow ?

[supremesuresh]

Yeah if the speed of the ship increases depth of the ship will increase