# 40 CFR § 139.13: Cathodic protection

> Federal · Regulations · In force

URL: https://www.frixlaw.com/law-library/statutes/ecfr-40-139.13

## Section

- **Citation:** 40 CFR § 139.13
- **Heading:** Cathodic protection
- **Jurisdiction:** Federal
- **Kind:** Regulations
- **Status:** In force
- **Text as of:** September 22, 2026
- **Source:** Publisher's official text
- **Location:** Title 40—Protection of Environment > CHAPTER I—ENVIRONMENTAL PROTECTION AGENCY > SUBCHAPTER D—WATER PROGRAMS > PART 139—DISCHARGES INCIDENTAL TO THE NORMAL OPERATION OF VESSELS > Subpart C—Standards for Specific Discharges Incidental to the Normal Operation of a Vessel

## Text

(a) The requirements in paragraph (b) of this section apply to discharges resulting from a vessel's cathodic corrosion control protection device, including but not limited to sacrificial anodes and impressed current cathodic protection (ICCP) systems.
(b) Spaces between any flush-fit anode and backing must be filled to remove potential hotspots for biofouling organisms.
(c) The vessel operator must consider using, but is not required to use, less toxic metals when selecting sacrificial anodes.

## Nearby sections

- [40 CFR § 139.1 § 139.1 Coverage.](https://www.frixlaw.com/law-library/statutes/ecfr-40-139.1.md)
- [40 CFR § 139.2 § 139.2 Definitions.](https://www.frixlaw.com/law-library/statutes/ecfr-40-139.2.md)
- [40 CFR § 139.3 § 139.3 Other Federal laws.](https://www.frixlaw.com/law-library/statutes/ecfr-40-139.3.md)
- [40 CFR § 139.4 § 139.4 General operation and maintenance.](https://www.frixlaw.com/law-library/statutes/ecfr-40-139.4.md)
- [40 CFR § 139.5 § 139.5 Biofouling management.](https://www.frixlaw.com/law-library/statutes/ecfr-40-139.5.md)
- [40 CFR § 139.6 § 139.6 Oil management.](https://www.frixlaw.com/law-library/statutes/ecfr-40-139.6.md)
- [40 CFR § 139.10 § 139.10 Ballast tanks.](https://www.frixlaw.com/law-library/statutes/ecfr-40-139.10.md)
- [40 CFR § 139.11 § 139.11 Bilges.](https://www.frixlaw.com/law-library/statutes/ecfr-40-139.11.md)
- [40 CFR § 139.12 § 139.12 Boilers.](https://www.frixlaw.com/law-library/statutes/ecfr-40-139.12.md)
- [40 CFR § 139.13 § 139.13 Cathodic protection.](https://www.frixlaw.com/law-library/statutes/ecfr-40-139.13.md)
- [40 CFR § 139.14 § 139.14 Chain lockers.](https://www.frixlaw.com/law-library/statutes/ecfr-40-139.14.md)
- [40 CFR § 139.15 § 139.15 Decks.](https://www.frixlaw.com/law-library/statutes/ecfr-40-139.15.md)
- [40 CFR § 139.16 § 139.16 Desalination and purification systems.](https://www.frixlaw.com/law-library/statutes/ecfr-40-139.16.md)
- [40 CFR § 139.17 § 139.17 Elevator pits.](https://www.frixlaw.com/law-library/statutes/ecfr-40-139.17.md)

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Source: Frix Law Library, https://www.frixlaw.com/law-library/statutes/ecfr-40-139.13. Check the current official text before relying on it. Not legal advice.