ZCZC UA98 262320 UTC MAY 26 MONDOLFO RADIO COASTAL WARNING 172/26 APR 05 (12 REPETITION) CENTRAL ADRIATIC SEAPESCARA. FAILURE OF THE OPTICAL NAVIGATION AIDS SYSTEMS ON THE GIOVANNA PLATFORM IS REPORTED IN POSITION: LAT. 42 46' 02''NLONG. 014 27' 50''E. TRANSITTING VESSELS PLEASE PAY MAXIMUM CAUTION NNNN