ZCZC JA40 010930 UTC APR 26 GERMAN NAV WARN 193 WESTERN BALTIC. BIGHT OF MECKLENBURG. MEASURING INSTRUMENTS ESTABLISHED AND MARKED BY YELLOW LIGHTBUOYS WITH INSCRIPTION 'ODAS' 54-2343N 011-2297E 54-2256N 012-1121E 54-0324N 011-1847E SAFE BERTH REQUESTED. NNNN