ZCZC FA09 252304 UTC APR PETERSBURG NAV WARN 071/26 EASTERN GULF OF FINLAND. SHIPS EXERCISES 302100 UTC APR - 312100 UTC MAY IN AREA TEMPORARILY DANGEROUS TO SHIPPING KR-105: 60-08.50N 029-00.00E 60-08.50N 029-15.00E 60-03.50N 029-15.00E 60-03.50N 029-00.00E CANCEL THIS MSG 312200 UTC MAY. NNNN