ZCZC FA93 140601 UTC AUG ESTONIAN NAV WARN 128/2026. GULF OF FINLAND. 170600-171300 UTC AUG FIRING PRACTICE AREA 4B CENTRED 59-37N 026-22E EXERCISE IN PROGRESS OTHER VESSELS MUST AVOID ENTRY INTO THE AREA CANCEL 171300 UTC AUG. NNNN