46 C.F.R. § 30.10-69 Tank vessel—TB/ALL.
Title 46 - Shipping
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]
Title 46: Shipping
PART 30—GENERAL PROVISIONS
Subpart 30.10—Definitions
§ 30.10-69 Tank vessel—TB/ALL.

