ZCZC JA53 231355 UTC SEP KALINGRAD NAV WARN 226/26 SOUTHEASTERN BALTIC SHIPS EXERCISES 302100 UTC SEP THRU 312100 UTC OCT IN AREA TEMPORARILY DANGEROUS TO SHIPPING BR-117 55-54.0N 019-03.0E 55-30.0N 020-15.0E 55-04.0N 020-15.0E 54-57.5N 020-06.0E 54-57.5N 019-55.0E 54-50.0N 019-50.0E 54-50.0N 019-25.0E CANCEL THIS MESSAGE 312200 UTC OCT NNNN