ZCZC DA89 232030 UTC SEP 26 ISTANBUL TURK RADIO NAVTEX N/W NR: 0315/26 SEA OF MARMARA SERDAR E*SE* MU*SEL FARM SPECIAL MARK LIGHT BUOY NO: 1 IN POSITION 40 27.37 *N- 028 03.56 E OFF STA*ION. CAUTION ADVISE*. NNNN