Hi, I'm trying to figure out the equivalent change of the Centre of Gravity when an amount of liquid is reduced. This could be a fuel oil tank on a ship. In other words, if I e.g. reduce the content what would be the equivalent vertical change of Centre of Gravity on a ship with a total displacement (weight) of x tonne? Example: On a ship with a deplacement of 6000 tonne the fuel oil (947 kg/m3) tank is reduced 50%. Tank measurements: 18 m long, 8 m wide and 2.2 m deep (see attached illustration). Hope I've made myself understandable and that some of you can help me Thanks in advance!