ZCZC DA01 040701 UTC DEC 25 ISTANBUL TURK RADIO NAV_EX N/W NR: (+ _9 STRAIT OF OF ISTANBUL UMURYERI BREAK _A_Q_VZCHH_ IN POHITION 41 08.87 N_N_ F__BXJ9______ !+.2_,*12 _,,_,_,7_-_-_*_1___*'_ -___-+:_: $-13 __1631 UTC APR 26 _STANB_OUBW_U_Z ROCK SHOAL BUOY IN POSI_ E UNRELIABL_ CAUTION ADVISED NNNN