ZCZC SA51 NCC-HAMBURG 140945 UTC SEP 26 NAV. WARN. NO. 517 GERMAN BIGHT. TSS 'TERSCHELLING- GERMAN BIGHT'. UNDERWATER OPERATIONS BY MV 'GO ELECTRA' CS 'V7ZR6' IN AREA BETWEEN 53-568N 006-566E AND 54-017N 006-483E RESTRICTED MANOEVRABILITY DURING OPERATIONS. BERTH OF 1 NM REQUESTED. NNNN