ZCZC JA91 270600 UTC APR POLISH NAV WARN 081/26 SOUTHERN BALTIC. POLISH COAST DUE TO MILITARY EXERCISES ZONE S-6 IS CLOSED FOR SHIPPING AND FISHERY: CENTERED 54-39.27N 016-36.59E 27 TO 29 APR 06:00-21:59 UTC 30 APR 06:00-12:00 AND 17:00-21:59 UTC CANCEL THIS MSG 302159 UTC APR NNNN