[Code of Federal Regulations] [Title 50, Volume 4] [Revised as of October 1, 2002] From the U.S. Government Printing Office via GPO Access [CITE: 50CFR697.9] [Page 841] TITLE 50--WILDLIFE AND FISHERIES DEPARTMENT OF COMMERCE PART 697--ATLANTIC COASTAL FISHERIES COOPERATIVE MANAGEMENT--Table of Contents Subpart A--General Provisions Sec. 697.9 Facilitation of enforcement. (a) General. See Sec. 600.504 of this chapter. (b) Radio hails. Permit holders, while underway, must be alert for communication conveying enforcement instructions and immediately answer via VHF-FM radio, channel 16, when hailed by an enforcement officer. Vessels not required to have VHF-FM radios by the Coast Guard are exempt from this requirement.