ZCZC SA79 NCC-HAMBURG 300945 UTC S*P 26 NAV. WARN. NO. 548 GERMAN BIGHT. TSS 'GERMAN BIGHT WESTERN APPROACH'. UNDERWATER OPERATIONS IN PROGRESS BY MV *SNORTHERN MARIA' CS 'OZAV2' IN AREA BETWEEN 54-108N 006-*ONQE AND 54-321N 006-073E RESTRICTED MANOEVRABILITY DURING OPERATIONS. BERTH OF 500M REQUESTED. NNNN