Similar topic on this thread:
Has this link
https://www.researchgate.net/publication/262731815_Cougar_Ace_The_Tipping_Point
Made a quick pass, min required GM for the Cougar Ace was 1.4 meters, calculated GM to stay upright was 0.15 meters, actual GM at the time was 0.05 meters.
The mate had to pump out 4000 tons of ballast water to reduce the GM. It took 160.9 tons to get the ship upright again.
