Periods when firing danger areas are closed for navigation are pulished by the HOPN at least 3 days prior coming into force. Areas dangerous for navigation may be established in vicinity of the closed areas.
For further information see Navigational Warnings and HOPN Notice to Mariners or contact local Harbour Masters.
Entry prohibited times are transmitted in Navigational Warnings via Witowo Radio (VHF 24, 25 and 26 after announcement on VHF 16) or via NAVTEX.
If necessary, call VTS Zatoka Gdanska (VHF 71, 16) and VTS Swinoujscie-Szczecin (VHF 12, 16) for information.