ZCZC JA99 270645 UTC JUN LATVIAN NAV WARN 018/26. CENTRAL BALTIC. LIEPAJA NORTHWARDS. FIRING EXERCISE IN PROGRESS ON JUN 29 0600-0900 UTC IN M2 AREA WITH A RADIUS OF 8 NM FROM PSN 56-42.0N 020-52.0E. AREA CLOSED FOR NAVIGATION DURING EXERCISE. WIDE BERTH REQUESTED. INFORMATION ON RESTRICTIONS ON VHF CH 16. CANCEL THIS MSG ON 290900 UTC JUN. NNNN