---
kind: "unit"
title: "46"
title_heading: "Shipping"
key: "chI/subchF"
level: "subchap"
label: "Subchapter F"
heading: "Marine Engineering"
release: "ecfr-current"
date: "2026-08-27"
url: "https://uscodex.org/cfr/46/chI-subchF"
sections_count: 482
---

# Subchapter F — Marine Engineering

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

## Contents

- [Part 50 — General Provisions](/cfr/46/chI-subchF-part50.md)
- [Part 51 — Part 51 [reserved]](/cfr/46/chI-subchF-part51.md)
- [Part 52 — Power Boilers](/cfr/46/chI-subchF-part52.md)
- [Part 53 — Heating Boilers](/cfr/46/chI-subchF-part53.md)
- [Part 54 — Pressure Vessels](/cfr/46/chI-subchF-part54.md)
- [Part 56 — Piping Systems and Appurtenances](/cfr/46/chI-subchF-part56.md)
- [Part 57 — Welding and Brazing](/cfr/46/chI-subchF-part57.md)
- [Part 58 — Main and Auxiliary Machinery and Related Systems](/cfr/46/chI-subchF-part58.md)
- [Part 59 — Repairs to Boilers, Pressure Vessels, and Appurtenances](/cfr/46/chI-subchF-part59.md)
- [Part 60 — Part 60 [reserved]](/cfr/46/chI-subchF-part60.md)
- [Part 61 — Periodic Tests and Inspections](/cfr/46/chI-subchF-part61.md)
- [Part 62 — Vital System Automation](/cfr/46/chI-subchF-part62.md)
- [Part 63 — Automatic Auxiliary Boilers](/cfr/46/chI-subchF-part63.md)
- [Part 64 — Marine Portable Tanks and Cargo Handling Systems](/cfr/46/chI-subchF-part64.md)