46 CFR § 98.31-15
Operating requirements
April 15, 2021
No person may operate a vessel that carries a bulk liquid cargo of NLS unless the vessel—
(a) Has on board a Certificate of Inspection and, if it is a vessel making a foreign voyage, an NLS Certificate endorsed under §98.31-10 with the name of the NLS cargo;
(b) Discharges no NLS residues to the sea unless the vessel meets—
(1) The equipment requirements in §98.31-10(a)(2); and
(2) The operating requirements prescribed for oceangoing ships carrying NLSs in §§153.901, 153.903, 153.909, and 153.1100 through 153.1132 of this chapter.