Formula for calculating Squat as provided to me

Cb x Speed squared / 100 = Squat

Therefore a vessel with a Block Coefficient at current draught of 0.9

At 4kn = 0.144m

At 8kn = 0.576m

At 12kn = 1.296m

At 16kn = 2.304m

At 20kn = 3.600m

I am aware that there are several formulas around and find this one a bit much. Check your ISM to see what you were given by your architect.