ZCZC SA51 NCC-HAMBURG 071030 UTC MAY 26 NAV. WARN. NO. 272 GERMAN BIGHT. 'WEISSE BANK' MEASURING INSTRUMENTS ESTABLISHED WITHIN A RADIUS OF 2,7 NM AROUND POSITION 54-56,2N 006-05.3E MARKED WITH YELLOW MARKERBALL OR WITH YELLOW SPARBUOY MINIMUM BERTH OF 100 METERS REQUESTED. ANCHORING AND FISHING PROHIBITED. NNNN