Sec. 80.863  Antenna system.

    (a) An antenna system must be installed which is as nondirectional 
and as efficient as is practicable for the transmission and reception of 
radio ground waves over seawater. The installation and construction of 
the required antenna must insure operation in time of emergency.
    (b) If the required antenna is suspended between masts or other 
supports liable to whipping, a safety link which, under heavy stress, 
will operate to greatly reduce such stress without breakage of the 
antenna, the halyards, or other antenna-supporting elements, must be 
installed.
    (c) When an electrical ground connection is used as an element of 
the antenna system, the connection must be efficient.