ZCZC FA11 252304 UTC APR PETERSBURG NAV WARN 072/26 EASTERN GULF OF FINLAND. SHIPS EXERCISES 302100 UTC APR - 312100 UTC MAY IN AREA TEMPORARILY DANGEROUS TO SHIPPING KR-107: 60-10.30N 028-45.70E 60-10.30N 028-54.60E 60-04.00N 028-54.60E 60-04.00N 028-34.00E 60-07.00N 028-34.00E CANCEL THIS MSG 312200 UTC MAY. NNNN