Certificates of number may be cancelled or voided under the following circumstances: 
 Surrender of certificate for cancellation; 
 Issuance of a new number for the same vessel; 
 Issuance of a marine document by the Bureau of Customs for the same vessel; 
 False or fraudulent certification in an application for number; 
 Willful mutilation, defacing, or altering of a number.
Structure Mississippi Code
Title 59 - Ports, Harbors, Landings and Watercraft
Chapter 21 - Boats and Other Vessels
Numbering of Undocumented Vessels
§ 59-21-5. Requirement of numbering of undocumented vessels
§ 59-21-9. Display of awarded number on vessel; use of other numbers prohibited
§ 59-21-11. Application for certificate of number
§ 59-21-23. Cancellation or voiding of certificate of number
§ 59-21-27. Additional certificates of numbers for livery boats; fees; renewals
§ 59-21-29. Registration of serial numbers of outboard motors