ATTENTION TO ALL MARINERS SAILING IN THE MEDITERRANEAN SEA,BE ADVISED THAT NAVTEX MESSAGE NUMBER 860/17 CONCERNING FIRING EXERCISE AREA, WHICH FALLS WITHIN THE HELLENIC NAVTEX SERVICE AREA, IS PROMULGATED BY AN UNAUTHORIZED STATION.THE ONLY AUTHORIZED NAVTEX STATIONS FOR GMDSS APPLICATION AND FOR BROADCASTING MSI AND SAR INFORMATION THROUGHOUT THE SAID SERVICE AREA ARE THE HELLENIC NAVTEX STATIONS LIMNOS (L) , IRAKLEIO (H) , AND KERKYRA (K) APPROVED BY IMO AND IHO. FOR MORE INFORMATION YOU ARE KINDLY REQUESTED TO CONTACT JRCC PIRAEUS.