ZCZC SA75 NCC-HAMBURG 280630 UTC SEP 26 NAV. WARN. NO. 543 GERMAN BIGHT. NORTHERLY TSS 'TERSCHELLING- GERMAN BIGHT'. UNDERWATER OPERATIONS BY MV 'GO ELECTRA' CS 'V7ZR6' AROUND POSITION 53-586N 006-565 RESTRICTED MANOEVRABILITY DURING OPERATIONS. BERTH OF 1 NM REQUESTED. NNNN