---
kind: "unit"
title: "46"
title_heading: "Shipping"
key: "chI/subchF/part53"
level: "part"
label: "Part 53"
heading: "Heating Boilers"
release: "ecfr-current"
date: "2026-08-27"
url: "https://uscodex.org/cfr/46/chI-subchF-part53"
sections_count: 13
---

# Part 53 — Heating Boilers

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

## Contents

- [Subpart 53.01 — General Requirements](/cfr/46/chI-subchF-part53-subpart53.01.md)
- [Subpart 53.05 — Pressure Relieving Devices (Article 4)](/cfr/46/chI-subchF-part53-subpart53.05.md)
- [Subpart 53.10 — Tests, Inspection, Stamping, and Reporting (Article 5)](/cfr/46/chI-subchF-part53-subpart53.10.md)
- [Subpart 53.12 — Instruments, Fittings, and Controls (Article 6)](/cfr/46/chI-subchF-part53-subpart53.12.md)