ZCZC SA83 NCC-HAMBURG 020420 UTC APR 26 NAV. WARN. NO. 194 GERMAN BIGHT. WEISSE BANK. SURVEY OPERATIONS BY MV 'FUGRO SYNERGY' CS 'C6XR3' AROUND POSITION 54-473N 005-583E RESTRICTED MANOEVRABILITY DURING OPERATIONS BERTH OF 2 NM REQUESTED. NNNN