[Code of Federal Regulations] [Title 33, Volume 2] [Revised as of July 1, 2003] From the U.S. Government Printing Office via GPO Access [CITE: 33CFR174.15] [Page 808-809] TITLE 33--NAVIGATION AND NAVIGABLE WATERS CHAPTER I--COAST GUARD, DEPARTMENT OF HOMELAND SECURITY (CONTINUED) PART 174--STATE NUMBERING AND CASUALTY REPORTING SYSTEMS--Table of Contents Subpart B--Numbering System Requirements Sec. 174.15 Validation stickers. (a) If a State issues validation stickers, its numbering system must contain the requirements that stickers must be displayed within 6 inches of the number and the stickers must meet the requirements in paragraphs (b) and (c) of this section. (b) Validation stickers must be approximately 3 inches square. [[Page 809]] (c) The year in which each validation sticker expires must be indicated by the colors, blue, international orange, green, and red, in rotation beginning with blue for stickers that expire in 1973.