Used by Class C EPIRBs. International Distress, Safety and Calling. Ships required to carry radio, USCG, and most coast stations maintain a listening watch on this channel. … NOAA Weather Radio Frequencies. ChannelFrequency (MHz)WX2162.400WX3162.475WX4162.425WX5162.450VHF Marine Radio Channels and Frequencies – navcen.uscg.gov www.navcen.uscg.gov › pageName=mtvhf