ZCZC UA15 292320 UTC MAY 26 MONDOLFO RADIO COASTAL WARNING 022/26 APR 17 (10 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