---
kind: "section"
citation: "33 C.F.R. § 173.33"
title: "33"
number: "173.33"
heading: "Removal of number."
url: "https://uscodex.org/cfr/33/173.33"
---

# §173.33. Removal of number.


The person whose name appears on a certificate of number as the owner of a vessel shall remove the number and validation sticker from the vessel when:

- (a) The vessel is documented by the Coast Guard;
- (b) The certificate of number is invalid under [paragraph (c)](/cfr/33/173.77.md?p=c) of § 173.77; or
- (c) **The vessel is no longer principally operated in the State where the certificate was issued.**

## Notes

### Amendments

[CGD 72-54R, 37 FR 21399, Oct. 7, 1972, as amended by USCG-2003-14963, 77 FR 18700, Mar. 28, 2012]

### Authority

Authority: 31 U.S.C. 9701; 46 U.S.C. 2110, 6101, 12301, 12302; OMB Circular A-25; DHS Delegation No. 00170.1, Revision No. 01.4.

### Source

Source: CGD 72-54R, 37 FR 21399, Oct. 7, 1972, unless otherwise noted.

### Amendments

[CGD 72-54R, 37 FR 21399, Oct. 7, 1972, as amended by USCG-2003-14963, 77 FR 18700, Mar. 28, 2012]