ZCZC SA90 NCC-HAMBURG 081345 UTC AUG 26 NAV. WARN. NO. 440 GERMAN BIGHT. TSS 'TERSCHELLING-GERMAN BIGHT'. UXO SURVEY AND CLEARANCE BY MV 'SEATERRA ACHIEVER' CS 'E6BU3' INSIDE TSS 'TERSCHELLING-GERMAN BIGHT' CROSSING TSS DURING THE UNDERWATER WORKS BETWEEN POSITIONS: 53-490N 007-024E AND 53-566N 006-572E. RESTRICTED MANOEVRABILITY DURING OPERATIONS. BERTH OF 1 NM REQUESTED. NNNN