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.