ZCZC CA23 271115 UTC APR 26*UKRAINE COASTAL WARNING 21/26 ODESA-NAVTEX BLACK SEA NORTHWESTERN PART 1.ISOLATED DANGER BUOY 45-53.7N 030-19.5E MISSING 2.VIRTUAL ISOLATED DANGER BUOY ESTABLISHED IN PSN 45-53.7N 030-19.5E NNNN