|Ballast is identified as a weight at the bottom of the boat to help keep it stable. Ballast can be place inside the hull of the boat or externally in a keel.|
Ballasts are materials, solely carried to improve the trim and the stability of the vessel. In vessel, usually water is carried as ballast in tanks, specially designed for that purpose
Quelle: Gloria Buenavista - 122164/2006-09-26
Ballast refers to a weight carried aboard a lighter-than-air vehicle to offset the buoyancy of its lifting gas.
Gas balloons commonly use sand, while blimps often carry metal shot in small canvas bags. Water has been the traditional ballast in rigid airships. Ballast is often expendable, being anything with weight that can be jettisoned from the vehicle. Ballast may be dropped by an airship to compensate for lost lifting gas or to ascend more quickly.
Quelle: Gloria Buenavista - 122382/2006-09-21
Other Database Pages Exist for this Phrase:
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