Technology Overview: Natural gas is the cleanest-burning fossil fuel producing significantly lower carbon emissions than coal or oil as well as lower levels of other pollutants. In recent years the demand for Natural gas has grown rapidly. Due to increased demand there is also an increasing need for larger liquefied natural gas (LNG) tanks and more flexible operation conditions which require partially filled tanks LNG sloshing can be a severe problem in damaging the tank (through higher stress and fatigue) and also contributing to instability of the carrier.