ZCZC UA42 242320 UTC JUL 26 MONDOLFO RADIO COASTAL WARNING 022/26 APR 17 (24 REPETATION) CENTRAL ADRIATIC SEA. OPTICAL ACOUSTIC SYSTEMS TO HELP NAVIGATION OF THE PLATFORM 'CALPURNIA' -IN POSITION: 43 53' 56''N 014 09' 14''E THEY ARE NOT WORKING. TRANSIT SHIPS BEWARE. NNNN