ZCZC JA63 130600 UTC APR POLISH NAV WARN 073/26 SOUTHERN BALTIC. POLISH COAST DUE TO MILITARY EXERCISES ZONE IS CLOSED FOR SHIPPING AND FISHERY: S-6 CENTERED 54-39.3N 016-37.0E ON 2026-04-13 TO 2026-04-18 FROM 06:00 TO 21:59. TIME IN UTC. ZONE IS CLOSED CANCEL THIS MSG 182159 UTC APR NNNN