[Code of Federal Regulations] [Title 46, Volume 4] [Revised as of October 1, 2006] From the U.S. Government Printing Office via GPO Access [CITE: 46CFR111.75-18] [Page 238-239] TITLE 46_SHIPPING (This book contains parts 90 to 139) CHAPTER I--COAST GUARD, DEPARTMENT OF HOMELAND SECURITY (CONTINUED) PART 111_ELECTRIC SYSTEMS_GENERAL REQUIREMENTS--Table of Contents Subpart 111.75_Lighting Circuits and Protection Sec. 111.75-18 Signaling lights. Each self-propelled vessel over 150 gross tons when engaged on an international voyage must have on board an efficient daylight signaling lamp that may not be solely dependent upon the vessel's main source of electrical power and that meets the following: (a) The axial luminous intensity of the beam must be at least 60,000 candelas. (b) The luminous intensity of the beam in every direction within an angle of 0.7 degrees from the axial must [[Page 239]] be at least 50 percent of the axial luminous intensity. [CGD 94-108, 61 FR 28282, June 4, 1996]