ZCZC SA71 NCC-HAMBURG 261100 UTC SEP 26 NAV. WARN. NO. 539 GERMAN BIGHT. SOUTH OF TSS 'TERSCHELLING- GERMAN BIGHT'. UNDERWATER OPERATIONS BY MV 'GO ELECTRA' CS 'V7ZR6' IN AREA BETWEEN POSITIONS 53-464N 007-101E AND 53-507N 007-015E. RESTRICTED MANOEVRABILITY DURING OPERATIONS. BERTH OF 1 NM REQUESTED. CANCEL NAV. WARN. NO. 532. NNNN