ZCZC JA70 141458 UTC APR KALINGRAD NAV WARN 076/26 SOUTHEASTERN BALTIC 1. AREA TEMPORARILY DANGEROUS TO SHIPPING 142100 THRU 172100 UTC APR WITHIN 2 MILE RADIUS OF 55-31.0N 020-08.0E 2. CANCEL THIS MESSAGE 172200 UTC APR NNNN