[Code of Federal Regulations] [Title 46, Volume 3] [Revised as of October 1, 2006] From the U.S. Government Printing Office via GPO Access [CITE: 46CFR77.09-1] [Page 90] TITLE 46--SHIPPING CHAPTER I--COAST GUARD, DEPARTMENT OF HOMELAND SECURITY (CONTINUED) PART 77_VESSEL CONTROL AND MISCELLANEOUS SYSTEMS AND EQUIPMENT--Table of Contents Subpart 77.09_Radar Sec. 77.09-1 When required. All mechanically propelled vessels of 1,600 gross tons and over in ocean or coastwise service must be fitted with a marine radar system for surface navigation. Facilities for plotting radar readings must be provided on the bridge. [CGD 75-074, 42 FR 5963, Jan. 31, 1977]