ZCZC FA02 251838 UTC MAR PETERSBURG NAV WARN 048/26 EASTERN GULF OF FINLAND SHIPS EXERCISES 312100 UTC MAR THRU 302100 UTC APR IN AREA TEMPORARILY DANGEROUS TO SHIPPING 59-53.43N 027-05.35E 59-53.43N 027-09.63E 59-46.43N 027-09.63E 59-46.43N 027-05.35E CANCEL THIS MESSAGE 302200 UTC APR NNNN