About an help for a MsC about Emergency Anchoring

Dear Sirs,

I’m a Captain of Merchant Navy, and I’m doing an MsC about Emergency Anchoring.
In order to give a better contribute to our area, I’d like to present some calculations, deploying how many knots can a ship loose after has dropped her anchor (per metres or per seconds) in an emergency.
I suppose it will depends on her speed (maximum 5 knots, according Capt. Jeff Pierce, on his Statement Regarding Cook Inlet Risk Assesment Seven) and displacement, but I can’t find out any formula concerned about.

Does anyone could help me, about that formula, please?
Best regards,

Antonio Canas