46 CFR § (ID1014222750) - § 30.10-69 Tank vessel—TB/ALL.

The term tank vessel means a vessel that is constructed or adapted to carry, or that carries, oil or hazardous material in bulk as cargo or cargo residue, and that—

(a) Is a vessel of the United States;

(b) Operates on the navigable waters of the United States; or

(c) Transfers oil or hazardous material in a port or place subject to the jurisdiction of the United States.

[CGD 79–116, 62 FR 25135, May 8, 1997]