ZCZC SA76 NCC-HAMBURG 260300 UTC APR 26 NAV. WARN. NO. 299 GERMAN BIGHT NORTH OF OWP 'GLOBAL TECH 1'. SURVEY OPERATIONS IN PROGRESS BY MV 'GEO OCEAN 8' CS 'LXAJ2' BETWEEN THE POSITIONS 54-390N 006-330E 54-390N 005-420E 54-350N 005-420E 54-350N 006-330E VESSEL TOWING MEASURING INSTRUMENTS. RESTRICTED MANOEVRABILITY DURING OPERATIONS. BERTH OF 0.5 NAUTICAL MILE REQUESTED. NNNN