---
kind: "unit"
title: "40"
title_heading: "Protection of Environment"
key: "chI/subchU/part1043"
level: "part"
label: "Part 1043"
heading: "Control of Nox, Sox, and Pm Emissions from Marine Engines and Vessels Subject to the Marpol Protocol"
release: "ecfr-current"
date: "2026-08-27"
url: "https://uscodex.org/cfr/40/chI-subchU-part1043"
sections_count: 16
---

# Part 1043 — Control of Nox, Sox, and Pm Emissions from Marine Engines and Vessels Subject to the Marpol Protocol

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

## Sections

- [§1043.1. Overview.](/cfr/40/1043.1.md)
- [§1043.5. Effective dates.](/cfr/40/1043.5.md)
- [§1043.10. Applicability.](/cfr/40/1043.10.md)
- [§1043.20. Definitions.](/cfr/40/1043.20.md)
- [§1043.30. General obligations.](/cfr/40/1043.30.md)
- [§1043.40. EIAPP certificates.](/cfr/40/1043.40.md)
- [§1043.41. EIAPP certification process.](/cfr/40/1043.41.md)
- [§1043.50. Approval of methods to meet Tier 1 retrofit NO X standards.](/cfr/40/1043.50.md)
- [§1043.55. Applying equivalent controls instead of complying with fuel requirements.](/cfr/40/1043.55.md)
- [§1043.60. Operating requirements for engines and vessels subject to this part.](/cfr/40/1043.60.md)
- [§1043.70. General recordkeeping and reporting requirements.](/cfr/40/1043.70.md)
- [§1043.80. Recordkeeping and reporting requirements for fuel suppliers.](/cfr/40/1043.80.md)
- [§1043.90. Reserved](/cfr/40/1043.90.md)
- [§1043.95. Great Lakes provisions.](/cfr/40/1043.95.md)
- [§1043.97. Interim provisions.](/cfr/40/1043.97.md)
- [§1043.100. Incorporation by reference.](/cfr/40/1043.100.md)