Ballast
Bouvier's Law Dictionary and Concise Encyclopedia · John Bouvier; revised by Francis Rawle · 1914
Bouvier's Law Dictionary and Concise Encyclopedia
That which is used for trimming a ship to bring it down to a draft of water proper and safe for sailing.
Great Western Ins. Co. v. Thwing, 13 WalL (U. S.) 674, 20 L. Ed. 607.