46 C.F.R. § 30.10-45 Ocean—TB/O.
Title 46 - Shipping
Under this designation shall be included all tank vessels normally navigating the waters of any ocean or the Gulf of Mexico more than 20 nautical miles offshore.
Title 46: Shipping
PART 30—GENERAL PROVISIONS
Subpart 30.10—Definitions
§ 30.10-45 Ocean—TB/O.