A coast (or coastal) radio station (short: coast station) is an on-shore maritime radio station which may monitor radio distress frequencies and relays ship-to-ship and ship-to-land communications.
A coast station (also: coast radio station ) is – according to article 1.75 of the International Telecommunication Union´s (ITU) ITU Radio Regulations (RR) – defined as «A land station in the maritime mobile service.»