ZCZC SA61 NCC-HAMBURG 160630 UTC JUL 26 NAV. WARN. NO. 407 GERMAN BIGHT. OFFSHORE-WINDPARK 'GLOBAL TECH 1'. SURVEY OPERATIONS IN PROGRESS BY MV 'GEO OCEAN 3', CS 'LXGP' WITHIN A RADIUS OF APPROX. 3 NM BETWEEN POSITIONS 54-35,1N 006-21,1E, 54-31,1N 006-26,7E AND 54-21,6N 006-28,1E. VESSEL TOWING MEASURING INSTRUMENTS. RESTRICTED MANOEVRABILITY DURING OPERATIONS. BERTH OF 500M REQUESTED. NNNN