[Code of Federal Regulations] [Title 33, Volume 1] [Revised as of July 1, 2005] From the U.S. Government Printing Office via GPO Access [CITE: 33CFR81.20] [Page 206-207] TITLE 33--NAVIGATION AND NAVIGABLE WATERS CHAPTER I--COAST GUARD, DEPARTMENT OF HOMELAND SECURITY PART 81_72 COLREGS: IMPLEMENTING RULES--Table of Contents Sec. 81.20 Lights and sound signal appliances. Each vessel under the 72 COLREGS, except the vessels of the Navy, is exempt from the requirements of the 72 COLREGS to the limitation for the period of time stated in Rule 38 (a), (b), (c), (d), (e), (f), and (g) if: (a) Her keel is laid or is at a corresponding stage of construction before July 15, 1977; and (b) She meets the International Regulations for Preventing Collisions at [[Page 207]] Sea, 1960 (77 Stat. 194, 33 U.S.C. 1051-1094). [CGD 76-133, 42 FR 35792, July 11, 1977. Redesignated at CGD 81-017, 46 FR 28154, May 26, 1981]