ZCZC SA44 NCC-HAMBURG 070650 UTC SEP 26 NAV. WARN. NO. 506 GERMAN BIGHT. TSS 'TERSCHELLING- GERMAN BIGHT'. UNDERWATER OPERATIONS BY MV 'GO ELECTRA' CS 'V7ZR6' IN AREA BETWEEN 53-5450N 006-5848E AND 53-5676N 006-5659E. RESTRICTED MANOEVRABILITY DURING OPERATIONS. BERTH OF 1 NM REQUESTED. NNNN