KnowraFree surface effectLinked fromLinked fromThe 3 pages that link to Free surface effect, each with the reason it gives.All 3Related 3Ship stabilityRelated: Partly filled tanks can make the vessel behave as though its center of gravity were higher.Metacentric heightRelated: It raises the vessel’s effective center of gravity and reduces effective metacentric height.Roll-on/roll-off shipRelated: Floodwater spreading across a vehicle deck can sharply reduce stability.