[Code of Federal Regulations] [Title 33, Volume 1] [Revised as of July 1, 2006] From the U.S. Government Printing Office via GPO Access [CITE: 33CFR117.53] [Page 548] TITLE 33--NAVIGATION AND NAVIGABLE WATERS CHAPTER I--COAST GUARD, DEPARTMENT OF HOMELAND SECURITY PART 117_DRAWBRIDGE OPERATION REGULATIONS--Table of Contents Subpart B_Specific Requirements Sec. 117.53 Applicability. (a) The requirements in this subpart apply to the bridges listed and are in addition to, or vary from, the general requirements in Subpart A. (b) A requirement in this subpart which varies from a general requirement in Subpart A supersedes the general requirement. (c) All other general requirements in Subpart A not at variance apply to the bridges listed in this subpart. (d) The draws of a number of the bridges listed in this subpart need not open for the passage of vessels during certain periods, however, this does not preclude the bridge owner from directing the drawtender to open the draw during these periods.