---
kind: "section"
citation: "33 C.F.R. § 157.132"
title: "33"
number: "157.132"
heading: "Cargo tanks: Hydrocarbon vapor emissions."
url: "https://uscodex.org/cfr/33/157.132"
---

# §157.132. Cargo tanks: Hydrocarbon vapor emissions.


Each tank vessel having a COW system under [§ 157.10a(a)(2)](/cfr/33/157.10a.md?p=a-2) or [§ 157.10c(b)(2)](/cfr/33/157.10c.md?p=b-2) without sufficient segregated ballast tanks or dedicated clean ballast tanks to allow the vessel to depart from any port in the United States without ballasting cargo tanks must have—

- (a) A means to discharge hydrocarbon vapors from each cargo tank that is ballasted to a cargo tank that is discharging crude oil; or
- (b) Any other means accepted by the Commandant that prevents hydrocarbon vapor emissions when the cargo tanks are ballasted in port.

## Notes

### Amendments

[CGD 77-058b, 45 FR 43709, June 30, 1980, as amended by CGD 82-28, 50 FR 11628, Mar. 22, 1985]

### Source

Source: CGD 77-058b, 45 FR 43709, June 30, 1980, unless otherwise noted.

### Authority

Authority: 33 U.S.C. 1903; 46 U.S.C. 3703, 3703a (note); Department of Homeland Security Delegation No. 0170.1. Subparts G, H, and I are also issued under section 4115(b), Pub. L. 101-380, 104 Stat. 520; Pub. L. 104-55, 109 Stat. 546.

### Source

Source: CGD 74-32, 40 FR 48283, Oct. 14, 1975, unless otherwise noted.

### Amendments

[CGD 77-058b, 45 FR 43709, June 30, 1980, as amended by CGD 82-28, 50 FR 11628, Mar. 22, 1985]