ZCZC FA74 210501 UTC SEP ESTONIAN NAV WARN 126/25. GULF OF FINLAND. 24-26 SEP W OF NAISSAAR ISLAND FIRING PRACTICE AREA 2/- :3,543$ 59-35.0N 024-19.0E MINEHUNTING OPERATION KEEP SAFE DISTANCE FROM NAVAL SHIPS 0,5 NM CANCEL 262100 UTC SEP. NNNN