ZCZC SA81 NCC-HAMBURG 171000 UTC MAY 26 NAV. WARN. NO. 304 GERMAN BIGHT. NORTHERLY WEISSE BANK. SURVEY OPERATIONS IN PROGRESS BY MV 'FUGRO DISCOVERY', RZ '3EKE6', 55-01,1N 005-57,9E 55-13,8N 006-10,1E 55-10,7N 006-20,1E UND 5--58,7N 006-07,3E. RESTRICTED MANOEVRABILITY DURING OPERATIONS. BERTH OF 1 NM REQUESTED. NNNN