---
kind: "unit"
title: "46"
title_heading: "Shipping"
key: "chI/subchM"
level: "subchap"
label: "Subchapter M"
heading: "Towing Vessels"
release: "ecfr-current"
date: "2026-08-27"
url: "https://uscodex.org/cfr/46/chI-subchM"
sections_count: 242
---

# Subchapter M — Towing Vessels

Title 46 C.F.R. — Shipping › Chapter I — Coast Guard, Department of Homeland Security

## Contents

- [Part 136 — Certification](/cfr/46/chI-subchM-part136.md)
- [Part 137 — Vessel Compliance](/cfr/46/chI-subchM-part137.md)
- [Part 138 — Towing Safety Management System (tsms)](/cfr/46/chI-subchM-part138.md)
- [Part 139 — Third-Party Organizations](/cfr/46/chI-subchM-part139.md)
- [Part 140 — Operations](/cfr/46/chI-subchM-part140.md)
- [Part 141 — Lifesaving](/cfr/46/chI-subchM-part141.md)
- [Part 142 — Fire Protection](/cfr/46/chI-subchM-part142.md)
- [Part 143 — Machinery and Electrical Systems and Equipment](/cfr/46/chI-subchM-part143.md)
- [Part 144 — Construction and Arrangement](/cfr/46/chI-subchM-part144.md)