ZCZC WA75 191940 UTC JUL 26 COASTAL WARNING ASTRAKHAN 306 VOLGO-CASPIAN CHA*NEL 1. CHANNEL DREDG*NG BY DREDGER NIKOLAY GRICHANOVSKIY ON 155.0 KM MOVEMENT OF SHIPS ON WEST SIDE CHANNEL 2. CANCEL 259/26 AND THIS PARA= NNNN