ZCZC FA46 231413 UTC SEP PETERSBURG NAV WARN 202/26 COASTAL WARNING PETERSBURG EASTERN GULF OF FINLAND SHIPS EXERCISES 302100 UTC SEP THRU 312100 UTC OCT 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 312200 UTC OCT NNNN