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Cross section of a vessel with a single ballast tank at the bottom. A ballast tank is a compartment within a boat, ship or other floating structure that holds water, which is used as ballast to provide hydrostatic stability for a vessel, to reduce or control buoyancy, as in a submarine, to correct trim or list, to provide a more even load distribution along the hull to reduce structural ...
A cargo ship discharging ballast water into the sea. Diagram showing the water pollution of the seas from untreated ballast water discharges. Ballast water discharges by ships can have a negative impact on the marine environment. The discharge of ballast water and sediments by ships is governed globally under the Ballast Water Management ...
A cargo ship discharging ballast water into the sea. Diagram showing the water pollution of the seas from untreated ballast water discharges. Ballast water discharges by ships can have a negative impact on the marine environment. The discharge of ballast water and sediments by ships is governed globally under the Ballast Water Management ...
DSV Alvin on the fantail (stern) of RV Atlantis following a dive. On the right side of the photograph the A-frame crane can be seen that lowers Alvin into the water and lifts it back on board, and on the left, Alvin ' s hangar. Like most deep submergence vehicles, Alvin is normally transported on board its support vessel.
Water, controlled by a Kingston valve, could be deliberately taken on board to act as ballast below the waterline. Some shipboard safety systems may also incorporate Kingston valves; selective flooding of compartments is a common damage control system on warships. Artillery magazines are generally designed to be rapidly floodable to prevent a ...
Ballast, other than cargo, may be placed in a vehicle, often a ship or the gondola of a balloon or airship, to provide stability. A compartment within a boat, ship, submarine, or other floating structure that holds water is called a ballast tank. Water should be moved in and out from the ballast tank to balance the ship.