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Title 46

Displaying title 46, up to date as of 7/17/2026. Title 46 was last amended 6/30/2026.
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Title 46ShippingPart / Section
Chapter ICoast Guard, Department of Homeland Security1 – 199
Subchapter OCertain Bulk Dangerous Cargoes150 – 155
Part 153Ships Carrying Bulk Liquid, Liquefied Gas, or Compressed Gas Hazardous Materials153.0 – 153.1608
Subpart COperations153.900 – 153.1504
Approval of Surveyors and Handling of Categories A, B, C, and D Cargo and NLS Residue153.1100 – 153.1132
§ 153.1100Responsibility of the person in charge.
§ 153.1101Procedures for getting a Surveyor: Approval of Surveyors.
§ 153.1102Handling and disposal of NLS residue: Categories A, B, C, and D.
§ 153.1104Draining of cargo hose: Categories A, B, C, and D.
§ 153.1106Cleaning agents.
§ 153.1108Heated prewash for solidifying NLS, high viscosity NLS and required prewashes of NLS whose viscosity exceeds 25 mPa sec at 20 °C: Categories A, B, and C.
§ 153.1112Prewash for tanks containing Category A NLS residue.
§ 153.1114Conditions under which a prewash may be omitted: Categories A, B, and C.
§ 153.1116Prewash for tanks unloaded without following the approved Procedures and Arrangements Manual: Categories B and C.
§ 153.1118Prewash of Categories B and C cargo tanks not meeting stripping standards: Categories B and C.
§ 153.1119When to prewash and discharge NLS residues from a prewash; unloading an NLS cargo in a country whose Administration is not signatory to MARPOL 73/78: Categories A, B, and C.
§ 153.1120Procedures for tank prewash: Categories A, B, and C.
§ 153.1122Discharges of NLS residue from tank washing other than a prewash: Categories A, B, and C.
§ 153.1124Discharges of Category D NLS residue.
§ 153.1126Discharge of NLS residue from a slop tank to the sea: Categories A, B, C, and D.
§ 153.1128Discharge of NLS residue from a cargo tank to the sea: Categories A. B, C, and D.
§ 153.1130Failure of slops discharge recording equipment; operating with, reporting failures, and replacing pollution equipment: Category A, B, C, D.
§ 153.1132Reporting spills and non-complying discharges: Category A, B, C, and D.