[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: 33CFR174.15] [Page 885] TITLE 33--NAVIGATION AND NAVIGABLE WATERS CHAPTER I--COAST GUARD, DEPARTMENT OF HOMELAND SECURITY(CONTINUED) PART 174_STATE NUMBERING AND CASUALTYREPORTING SYSTEMS--Table of Contents Subpart B_Numbering System Requirements Sec. 174.15 Validation stickers. (a) If a State issues validation stickers, its numbering systemmust contain the requirements that stickers must be displayed within 6inches of the number and the stickers must meet the requirements inparagraphs (b) and (c) of this section. (b) Validation stickers must be approximately 3 inches square. (c) The year in which each validation sticker expires must beindicated by the colors, blue, international orange, green, and red,in rotation beginning with blue for stickers that expire in 1973.