---
kind: "section"
citation: "33 C.F.R. § 157.158"
title: "33"
number: "157.158"
heading: "COW operations: Changed characteristics."
url: "https://uscodex.org/cfr/33/157.158"
---

# §157.158. COW operations: Changed characteristics.


The COW system may be operated with characteristics that do not meet those recorded under [§ 157.150(b)](/cfr/33/157.150.md?p=b) only if:

- (a) The tank vessel passes the inspections under [§ 157.140](/cfr/33/157.140.md) using the changed characteristics;
- (b) The changed characteristics used to pass the inspections under [§ 157.140](/cfr/33/157.140.md) are recorded in the Crude Oil Washing Operations and Equipment Manual approved under [§ 157.112](/cfr/33/157.112.md); and
- (c) The Coast Guard issues to the tank vessel an amending letter stating that the tank vessel complies with this subpart with these characteristics.

## Notes

### 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.