ZCZC SA02 NCC-HAMBURG 151620 UTC AUG 26 NAV. WARN. NO. 455 GERMAN BIGHT. TSS 'TERSCHELLING-GERMAN BIGHT'. DIVING OPS BY MV 'SEATERRA ACHIEVER', CS 'E6BU3', IN POSITION 55-55,9N 006-57,8E RESTRICTED MANOEVRABILITY DURING OPERATIOM BERTH OF 1 NM REQUESTED. CANCEL NAV. WARN. NO. 444. NNNN