ZCZC FA99 261306 UTC OCT PETERSBURG NAV WARN 220/26 EASTERN GULF OF FINLAND SHIPS EXERCISES 312100 UTC OCT THRU 302100 UTC NOV IN AREA TEMPORARILY DANGEROUS TO SHIPCING 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 NOV NNNN