The Gavrio Port Guard (1st Port Office of Gavrio) is located at the main port of Andros, in Gavrio (postal code 84501). It operates as a local branch of the Hellenic Coast Guard (Ministry of Maritime Affairs and Insular Policy), under the Andros Port Authority.

Its primary role is the smooth operation of the port, port policing for ferries and private vessels, monitoring of arrivals and departures, enforcement of safety regulations and assistance to passengers and vehicles throughout the year — especially during the summer months.

In a maritime emergency, call the national Coast Guard line 108 or the European Emergency Line 112. For information or port-related matters, call +30 22820 71213 or the Andros Port Authority on +30 22820 22250 (email: andros@hcg.gr).