ZCZC JA52 010100 UTC JAN 26 VARNA RADIO NAVWARN 15/26 BURGAS PORT. TWO SPECIAL BUOYSYELLOWWITH LIGHT CHARACTERISTIC Y FL 4S (FL 05 EC 35) ARE PLACED IN POINTS: Y8 42 27305N 027 31923E Y9 42 26903N 027 31:836E. NNNN