Sec.  80.505   Points of communication.

   (a) Private coast stations and marine utility stations are authorized to
   communicate:

   (1) With any mobile station in the maritime mobile service for the exchange
   of safety communications;

   (2) With any land station for the purpose of aiding the exchange of safety
   communications;

   (3) With ship stations.

   (b) Private coast stations of the same licensee may be authorized to
   communicate on a secondary basis between themselves if:

   (1) The communications are confined exclusively to those for which authority
   has been granted the coast station, and concerns ships with which one or
   both of the coast stations are authorized to communicate; and

   (2) Other satisfactory point-to-point communication facilities between the
   coast stations are unavailable; and

   (3) Coast stations which communicate with each other are not more than 160
   km (100 miles) apart; and

   (4) Harmful interference is not cause to mobile stations.

   (c) A private coast station and associated marine utility stations serving
   and located on a shipyard regularly engaged in construction or repair of
   commercial transport vessels or Government vessels are authorize to
   communicate between stations when they are licensed to the same entity and
   communications are limited to serving the needs of ships on a
   non-interference basis to other stations in the maritime mobile service. A
   separate showing is required.