ZCZC FA03 251840 UTC MAR PETERSBURG NAV WARN 049/26 EASTERN GULF OF FINLAND SHIPS EXERCISES 312100 UTC MAR THRU 302100 UTC APR IN AREA TEMPORARILY DANGEROUS TO SHIPPING 60-00.50N 027-16.50E 60-05.40N 027-34.00E 59-53.00N 027-48.00E 59-48.00N 027-31.00E CANCEL THIS MESSAGE 302200 UTC APR NNNN