ZCZC JA28 251815 UTC MAR KALINGRAD NAV WARN 052/26 SOUTHEASTERN BALTIC SHIPS EXERCISES 312100 UTC MAR THRU 302100 UTC APR IN AREA TEMPORARILY DANGEROUS TO SHIPPING BR-117 55-54.00N 019-03.00E 55-30.00N 020-15.00E 55-04.00N 020-15.00E 54-57.50N 020-06.00E 54-57.50N 019-55.00E 54-50.00N 019-50.00E 54-50.00N 019-25.00E CANCEL THIS MESSAGE 302200 UTC APR NNNN