ZCZC SA11 NCC-HAMBURG 220620 UTC APR 26 NAV. WARN. NO. 229 GERMAN BIGHT. WEISSE BANK. UNDERWATER OPERATIONS BY MV 'FUGRO ZEPHYR', CS 'C6HS5', AROUND POSITION 54-44,6N 006-10,1E RESTRICTED MANOEVRABILITY DURING OPCPATIONS, BERTH OF 1 NM REQUESTED. NNNN