[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: 33CFR173.33] [Page 879-880] 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. 173.33 Removal of number. The person whose name appears on a certificate of number as theowner of a vessel shall remove the number and [[Page 880]] validation stickerfrom the vessel when: (a) The vessel is documented by the Coast Guard; (b) The certificate of number is invalid under paragraph (c) ofSec. 173.77; or (c) The vessel is no longer principally used in the State wherethe certificate was issued.