Regulations last checked for updates: Feb 12, 2026

Title 33 - Navigation and Navigable Waters last revised: Feb 03, 2026
All TitlesTitle 33Chapter IPart 158Subpart E - Subpart E—Port and Terminal Operations
View all text of Subpart E [§ 158.500 - § 158.520]
§ 158.500 - Draining cargo area and piping systems.

The person in charge shall ensure that each cargo hose and each piping system containing NLS received from each oceangoing ship carrying NLS cargo is not drained back into the ship.

authority: 33 U.S.C. 1903(b), 1905(c); 49 CFR 1.46
cite as: 33 CFR 158.500
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