What is ship ballast?
Ballast is material that is used to provide stability to a vehicle or structure. A compartment within a boat, ship, submarine, or other floating structure that holds water is called a ballast tank. Water should move in and out from the ballast tank to balance the ship.
Whats the definition of ballast?
(Entry 1 of 2) 1 : a heavy substance (such as rocks or water) placed in such a way as to improve stability and control (as of the draft of a ship or the buoyancy of a balloon or submarine) tossed several tons of ballast overboard.
Why do ships have ballast?
Ballast water is fresh or saltwater held in the ballast tanks and cargo holds of ships. It is used to provide stability and maneuverability during a voyage when ships are not carrying cargo, not carrying heavy enough cargo, or when more stability is required due to rough seas.
Does my fluorescent light have a ballast?
No halogen bulbs require a ballast. All fluorescent bulbs require a ballast. All compact fluorescent (CFL) bulbs require a ballast, which is often integrated. All HID bulbs require a ballast, which is sometimes integrated.
What is the purpose of ballast?
In a fluorescent lighting system, the ballast regulates the current to the lamps and provides sufficient voltage to start the lamps. Without a ballast to limit its current, a fluorescent lamp connected directly to a high voltage power source would rapidly and uncontrollably increase its current draw.
What is ballast used for?
Ballast is a mixture of sharp sand and small stones or gravel, used to make concrete for a variety of landscaping uses – from path edgings and shed bases to kerbs and securing fence posts. We also supply recycled ballast as part of our Eco-Range.
What is emotional ballast?
ballast Add to list Share. A ballast is any heavy material that helps to make a ship or plane stable, including metaphorical ships like your mood. If you hate school, the thought of a weekend coming might be a ballast for your mood.
How do you treat a water ballast?
There are three approaches to treating ballast water; mechanical, physical or chemical. Mechanical methods would include separation and filtration; physical methods include ozone, electrical currents, or UV radiation, while chemical solutions are biocides or a form of chlorination.
Is ballast water dirty?
Dirty ballast is water which may contain residual fuel and other constituents as a result of sea water being stored in fuel tanks. Dirty ballast is discharged to the environment after being processed through OCMs and/or OWS systems that ensure the ballast water fuel/oil concentrations are below Federal standards.
What is ballasting and de-ballasting?
In the simplest definition, de-ballasting is removing water from the ship to the sea . In contrast, transferring water from the sea to the vessel is called ballasting. The (sea) water is stored in specific tanks on board called water ballast tanks (WBT) or simply called ballast tanks.
What is a variable ballast system?
A variable ballast system uses four tanks located centrally in the main frame. The centre of the craft contains twin steel cylindrical hulls. These hulls contain the main power supply, on board computer and the craft control circuitry. Four trolling motors, manufactured by MinnKota, act as thrusters to provide propulsion.
What is the definition of ballast?
Definition of ballast. (Entry 1 of 2) 1 : a heavy substance (such as rocks or water) placed in such a way as to improve stability and control (as of the draft of a ship or the buoyancy of a balloon or submarine) tossed several tons of ballast overboard.