[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: 33CFR173.35] [Page 880] 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 B_Numbering Sec. 173.35 Coast Guard validation sticker. No person may use a vessel except a vessel exempted inSec. 173.13 that has a number issued by the Coast Guardunless it has the validation sticker issued with the certificate ofnumber displayed within 6 inches of the number.