What ship system is used to move water in and out of special tanks to control the vessel's draft, trim, and stability?

The ship system used to move water in and out of special tanks to control the vessel's draft, trim, and stability is the Ballast System. This system comprises a network of dedicated ballast tanks, pumps, piping, and valves. Its primary function is to manage the intake, storage, and discharge of ballast water, which is water intentionally taken aboard a vessel to ensure its safe and efficient operation. Draft is the vertical distance from the waterline to the lowest point of the ship's hull. The Ballast System controls draft by adding or removing ballast water, effecti....