[Code of Federal Regulations] [Title 33, Volume 2] [Revised as of July 1, 2008] From the U.S. Government Printing Office via GPO Access [CITE: 33CFR173.79] [Page 882] TITLE 33--NAVIGATION AND NAVIGABLE WATERS CHAPTER I--COAST GUARD, DEPARTMENT OF HOMELAND SECURITY(CONTINUED) PART 173_VESSEL NUMBERING AND CASUALTY ANDACCIDENT REPORTING--Table of Contents Subpart D_Issue of Certificate of Number Sec. 173.79 Expiration of Coast Guard certificate of number. A certificate of number issued by the Coast Guard expires 3 yearsfrom the date it is issued.