ZCZC SA74 NCC-HAMBURG 131815 UTC MAI 26 NAV. WARN. NO. 298 GERMAN BIGHT. TSS TERSCHELLING-GERMAN BIGHT UNDERWATER OPERATIONS BY MV 'VOS GORGEOUS' CS '2HEN8'. CROSSING TSS DURING THE UNDERWATER WORKS BETWEEN POSITION 53-483N 007-021E AND 53-570N 006-571E. 500 M BERTH REQUESTED. NNNN