FREE SURFACE EFFECT
FREE SURFACE EFFECT Definition of free surface effect? When a tank or compartment partially filled with liquid, when a ship is inclined. liquid will moves along with ship's inclined direction. which will reduce the stability of the ship. How to reduce free surface effect : Swash bulkheads Pocketing Surface permeability Sluice valves Swash bulkheads This types of bulkheads give some additional strength, Which are longitudinal bulkheads which will restrict the flow of liquid when ship is inclined Pocketing fill the tank fully which will reduce the free surface effect Surface permeability The object such as machineries, engine and piping systems prevent the moving water shifting of wedge, these reducing the free surface effect. Sluice valves The large slack tanks are cross connected with sluice valves, it will reduce the flow of the liquid so that it will reduce free surface effect.