[Code of Federal Regulations] [Title 46, Volume 1] [Revised as of October 1, 2003] From the U.S. Government Printing Office via GPO Access [CITE: 46CFR4.04-1] [Page 42] TITLE 46--SHIPPING CHAPTER I--COAST GUARD, DEPARTMENT OF HOMELAND SECURITY PART 4--MARINE CASUALTIES AND INVESTIGATIONS--Table of Contents Subpart 4.04--Notice of Potential Vessel Casualty Sec. 4.04-1 Reports of potential vessel casualty. Source: CGD 85-015, 51 FR 19341, May 29, 1986, unless otherwise noted. A vessel owner, charterer, managing operator or agent shall immediately notify either of the following Coast Guard officers if there is reason to believe a vessel is lost or imperiled. (a) The Coast Guard district rescue coordination center (RCC) cognizant over the area the vessel was last operating in; or (b) The Coast Guard search and rescue authority nearest to where the vessel was last operating. Reasons for belief that a vessel is in distress include, but are not limited to, lack of communication with or nonappearance of the vessel.