---
kind: "unit"
title: "33"
title_heading: "Navigation and Navigable Waters"
key: "chI/subchN/part146"
level: "part"
label: "Part 146"
heading: "Operations"
release: "ecfr-current"
date: "2026-08-27"
url: "https://uscodex.org/cfr/33/chI-subchN-part146"
sections_count: 33
---

# Part 146 — Operations

Title 33 C.F.R. — Navigation and Navigable Waters › Chapter I — Coast Guard, Department of Homeland Security › Subchapter N — Outer Continental Shelf Activities

## Contents

- [Subpart A — OCS Facilities](/cfr/33/chI-subchN-part146-subpartA.md)
- [Subpart B — Manned OCS Facilities](/cfr/33/chI-subchN-part146-subpartB.md)
- [Subpart C — Mobile Offshore Drilling Units](/cfr/33/chI-subchN-part146-subpartC.md)
- [Subpart D — Vessels, including MODUs—Notice of Casualty](/cfr/33/chI-subchN-part146-subpartD.md)
- [Subpart E — Vessels—Safety and Security Notice of Arrival](/cfr/33/chI-subchN-part146-subpartE.md)