47 C.F.R. § 80.876 VHF radiotelephone antenna system.
Title 47 - Telecommunication
A vertically polarized nondirectional antenna must be provided for VHF radiotelephone installations. The construction and installation of this antenna must insure proper operation in an emergency.
Title 47: Telecommunication
PART 80—STATIONS IN THE MARITIME SERVICES
Subpart R—Compulsory Radiotelephone Installations for Vessels 300 Gross Tons
§ 80.876 VHF radiotelephone antenna system.