U.S. Code of Federal Regulations

Regulations most recently checked for updates: Jan 21, 2026

All TitlesTitle 46Chapter IPart 153Subpart C - Subpart C—Operations

DOCUMENTS AND CARGO INFORMATION
§ 153.900 - Certificates and authorization to carry a bulk liquid hazardous material.
§ 153.901 - Documents: Posting, availability, and alteration.
§ 153.902 - Expiration and invalidation of the Certificate of Compliance.
§ 153.903 - Operating a United States ship in special areas: Categories A, B, and C.
§ 153.904 - Limitations in the endorsement.
§ 153.905 - Regulations required to be on board.
§ 153.907 - Cargo information.
§ 153.908 - Cargo viscosity and melting point information; measuring cargo temperature during discharge: Categories A, B, and C.
§ 153.909 - Completing the Cargo Record Book and record retention: Categories A, B, C, and D.
§ 153.910 - Cargo piping plan.
§ 153.912 - Certificate of inhibition or stabilization.

GENERAL CARGO OPERATIONAL REQUIREMENTS
§ 153.920 - Cargo quantity limitations.
§ 153.921 - Explosives.
§ 153.923 - Inerting systems.

GENERAL VESSEL SAFETY
§ 153.930 - Cargo antidotes.
§ 153.931 - Obstruction of pumproom ladderways.
§ 153.932 - Goggles and protective clothing.
§ 153.933 - Chemical protective clothing.
§ 153.934 - Entry into spaces containing cargo vapor.
§ 153.935 - Opening of tanks and cargo sampling.
§ 153.935a - Storage of cargo samples.
§ 153.936 - Illness, alcohol, drugs.

MARKING OF CARGO TRANSFER HOSE
§ 153.940 - Standards for marking of cargo hose.

CARGO TRANSFER PROCEDURES
§ 153.953 - Signals during cargo transfer.
§ 153.955 - Warning signs during cargo transfer.
§ 153.957 - Persons in charge of transferring liquid cargo in bulk or cleaning cargo tanks.
§ 153.959 - Approval to begin transfer operations required.
§ 153.964 - Discharge by gas pressurization.
§ 153.966 - Discharge by liquid displacement.
§ 153.968 - Cargo transfer conference.
§ 153.970 - Cargo transfer piping.
§ 153.972 - Connecting a cargo hose.
§ 153.975 - Preparation for cargo transfer.
§ 153.976 - Transfer of packaged cargo or ship's stores.
§ 153.977 - Supervision of cargo transfer.
§ 153.979 - Gauging with a sounding tube.
§ 153.980 - Isolation of automatic closing valves.
§ 153.981 - Leaving room in tank for cargo expansion.
§ 153.983 - Termination procedures.

SPECIAL CARGO PROCEDURES
§ 153.1000 - Special operating requirements for cargoes reactive with water.
§ 153.1002 - Special operating requirements for heat sensitive cargoes.
§ 153.1003 - Prohibited carriage in deck tanks.
§ 153.1004 - Inhibited and stabilized cargoes.
§ 153.1010 - Alkylene oxides.
§ 153.1011 - Changing containment systems and hoses to and from alkylene oxide service.
§ 153.1020 - Unusually toxic cargoes.
§ 153.1025 - Motor fuel antiknock compounds.
§ 153.1035 - Acetone cyanohydrin or lactonitrile solutions.
§ 153.1040 - Carbon disulfide.
§ 153.1045 - Inorganic acids.
§ 153.1046 - Sulfuric acid.
§ 153.1052 - Carriage of other cargoes in acid tanks.
§ 153.1060 - Benzene.
§ 153.1065 - Sodium chlorate solutions.

APPROVAL OF SURVEYORS AND HANDLING OF CATEGORIES A, B, C, AND D CARGO AND NLS RESIDUE
§ 153.1100 - Responsibility of the person in charge.
§ 153.1101 - Procedures for getting a Surveyor: Approval of Surveyors.
§ 153.1102 - Handling and disposal of NLS residue: Categories A, B, C, and D.
§ 153.1104 - Draining of cargo hose: Categories A, B, C, and D.
§ 153.1106 - Cleaning agents.
§ 153.1108 - Heated 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.
§ 153.1112 - Prewash for tanks containing Category A NLS residue.
§ 153.1114 - Conditions under which a prewash may be omitted: Categories A, B, and C.
§ 153.1116 - Prewash for tanks unloaded without following the approved Procedures and Arrangements Manual: Categories B and C.
§ 153.1118 - Prewash of Categories B and C cargo tanks not meeting stripping standards: Categories B and C.
§ 153.1119 - When 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.
§ 153.1120 - Procedures for tank prewash: Categories A, B, and C.
§ 153.1122 - Discharges of NLS residue from tank washing other than a prewash: Categories A, B, and C.
§ 153.1124 - Discharges of Category D NLS residue.
§ 153.1126 - Discharge of NLS residue from a slop tank to the sea: Categories A, B, C, and D.
§ 153.1128 - Discharge of NLS residue from a cargo tank to the sea: Categories A. B, C, and D.
§ 153.1130 - Failure of slops discharge recording equipment; operating with, reporting failures, and replacing pollution equipment: Category A, B, C, D.
§ 153.1132 - Reporting spills and non-complying discharges: Category A, B, C, and D.

MAINTENANCE
§ 153.1500 - Venting system rupture disks.
§ 153.1502 - Fixed ballast relocation.
§ 153.1504 - Inspection of personnel emergency and safety equipment.
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