ZCZC SA80 NCC-HAMBURG 170700 UTC MAY 26 NAV. WARN. NO. 303 GERMAN BIGHT. NORTHEASTERLY WEISSE BANK. SURVEY OPERATIONS IN PROGRESS BY MV 'KOMMANDOR ORCA' CS 'MKFI8' AROUND POSITION 55-06NA006-11E RESTRICTED MANOEVRABILITY DURING OPERATIONS. BERTH OF 1 NM REQUESTED. NNNN