---
kind: "unit"
title: "40"
title_heading: "Protection of Environment"
key: "chI/subchU/part1045"
level: "part"
label: "Part 1045"
heading: "Control of Emissions from Spark-Ignition Propulsion Marine Engines and Vessels"
release: "ecfr-current"
date: "2026-08-27"
url: "https://uscodex.org/cfr/40/chI-subchU-part1045"
sections_count: 81
---

# Part 1045 — Control of Emissions from Spark-Ignition Propulsion Marine Engines and Vessels

Title 40 C.F.R. — Protection of Environment › Chapter I — Environmental Protection Agency › Subchapter U — Air Pollution Controls

## Contents

- [Subpart A — Overview and Applicability](/cfr/40/chI-subchU-part1045-subpartA.md)
- [Subpart B — Emission Standards and Related Requirements](/cfr/40/chI-subchU-part1045-subpartB.md)
- [Subpart C — Certifying Engine Families](/cfr/40/chI-subchU-part1045-subpartC.md)
- [Subpart D — Testing Production-line Engines](/cfr/40/chI-subchU-part1045-subpartD.md)
- [Subpart E — In-Use Testing](/cfr/40/chI-subchU-part1045-subpartE.md)
- [Subpart F — Test Procedures](/cfr/40/chI-subchU-part1045-subpartF.md)
- [Subpart G — Special Compliance Provisions](/cfr/40/chI-subchU-part1045-subpartG.md)
- [Subpart H — Averaging, Banking, and Trading for Certification](/cfr/40/chI-subchU-part1045-subpartH.md)
- [Subpart I — Definitions and Other Reference Information](/cfr/40/chI-subchU-part1045-subpartI.md)