ZCZC FA55 270702 UTC SEP ESTONIAN NAV WARN 163/26 GULF OF FINLAND. 300700 - 301200 UTC SEP W OF NAISSAAR ISLAND FIRING PRACTICE AREA 2A CENTRED 59-35N 024-19E FIRING EXERCISES IN PROGRESS. OTHER VESSELS MUST AVOID ENTRY INTO THE AREA. STANDING BY VHF CH 13 AND 61. CANCEL 301200 UTC SEP. NNNN