---
kind: "unit"
title: "33"
title_heading: "Navigation and Navigable Waters"
key: "chI/subchO/part157"
level: "part"
label: "Part 157"
heading: "Rules for the Protection of the Marine Environment Relating to Tank Vessels Carrying Oil in Bulk"
release: "ecfr-current"
date: "2026-08-27"
url: "https://uscodex.org/cfr/33/chI-subchO-part157"
sections_count: 125
---

# Part 157 — Rules for the Protection of the Marine Environment Relating to Tank Vessels Carrying Oil in Bulk

Title 33 C.F.R. — Navigation and Navigable Waters › Chapter I — Coast Guard, Department of Homeland Security › Subchapter O — Pollution

## Contents

- [Subpart A — General](/cfr/33/chI-subchO-part157-subpartA.md)
- [Subpart B — Design, Equipment, and Installation](/cfr/33/chI-subchO-part157-subpartB.md)
- [Subpart C — Vessel Operation](/cfr/33/chI-subchO-part157-subpartC.md)
- [Subpart D — Crude Oil Washing (COW) System on Tank Vessels](/cfr/33/chI-subchO-part157-subpartD.md)
- [Subpart E — Dedicated Clean Ballast Tanks on Tank Vessels](/cfr/33/chI-subchO-part157-subpartE.md)
- [Subpart F — Exemption From § 157.10a or § 157.10c](/cfr/33/chI-subchO-part157-subpartF.md)
- [Subpart G — Interim Measures for Certain Tank Vessels Without Double Hulls Carrying Petroleum Oils](/cfr/33/chI-subchO-part157-subpartG.md)
- [Subpart H — Interim Measures for Certain Tank Vessels Without Double Hulls Carrying Animal Fat or Vegetable Oil](/cfr/33/chI-subchO-part157-subpartH.md)
- [Subpart I — Interim Measures for Certain Tank Vessels Without Double Hulls Carrying Other Non-Petroleum Oil](/cfr/33/chI-subchO-part157-subpartI.md)