Ballast (disambiguation)

Ballast is any material used to provide stability to a vehicle or structure. It may also refer to:


  • Ballast tank, a device used on ships and submarines and other submersibles to control buoyancy and stability
  • Ballast weights, metallic plates used to bring auto racing vehicles up to the minimum mandated weight
  • Electrical ballast, used to stabilize the current flow in lamps
  • Sailing ballast, ship's ballast, used to weigh a ship down
  • Track ballast, the layer of crushed rock or gravel upon which railway track is laid
  • Ballast carried aboard an aircraft, for example:
    • in gliding, to maximise the average speed in cross-country competition, especially when thermal convection is strong
    • in a balloon as a buoyancy compensator
  • Ballast tractor, a heavy haulage road vehicle designed to pull or push heavy or exceptionally large loads