ZCZC WA65 121540 UTC APR 26 COASTAL WARNING ASTRAKHAN 131 VOLGO-CASPIAN CHANNEL 1. CHADNEL DRD*ING BY DREDGER BOREY ON 170.6-171.6 KM MOVEMENT OF SHIPS ON WEST SID* CHANNEL 2. CANCEL 130/26 AND THIS PARA= NNNN