ZCZC SA18 NCC-HAMBURG 210820 UTC AUG 26 NAV. WARN. NO. 476 GERMAN BIGHT. TSS 'TERSCHELLING-GERMAN BIGHT'. DIVING OPS BY MV 'SEATERRA ACHIEVER' CS 'E6BU3' AROUND POSITION 53-481N 007-036E RESTRICTED MANOEVRABILITY DURING OPERATIONS. BERTH OF 1 NM REQUESTED. NNNN