ZCZC JA17 271332 UTC AUG GERMAN NAV WARN 484/26 WESTERN BALTIC. BAY OF MECKLENBURG. RESEARCH WORK IN PROGRESS BY MV 'OLYMPIC ZEUS' CS 'LAURES IN THE AREA OF POSITION 54-175N 012-015E. SHIPPING IS REQUESTED TO NAVIGATE WITH CAUTION. SAFE BERTH OF 500M REQUESTED. NNNN