ZCZC SA84 NCC-HAMBURG 190400 UTC MAI 26 NAV. WARN. NO. 307 GERMAN BIGHT. TSS GERMAN BIGHT WESTERN APPROACH UNDERWATER OPERATIONS BY MV 'VOS GORGEOUS' CS '2HEN8'. CROSSING TSS DURING THE UNDERWATER WORKS BETWEEN POSITION 54-076N 006-326E AND 54-125N 006-270E. 500 M BERTH REQUESTED. NNNN