ZCZC FA08 261409 UTC AUG PETERSBURG NAV WARN 176/26 EASTERN GULF OF FINLAND. SHIPS EXERCISES 312100 UTC AUG THRU 302100 UTC SEP 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 MSG 302200 UTC SEP. NNNN