Data sources and credits

• Deutscher Wetterdienst: NAVTEX monitoring receivers at Norderney and Rostock, 518 and 490 kHz.
• Plovput: transmit log of Split Radio, Croatia (518 kHz Q, 490 kHz F).
• Official navigational warning lists, used for the clean text of warnings and to tell which are still in force:
  • UK Hydrographic Office: NAVAREA I and UK coastal (WZ) warnings.
  • Kystverket (Norwegian Coastal Administration).
  • Sjöfartsverket (Swedish Maritime Administration).
  • Danish Maritime Authority (Niord).
  • BSH (Federal Maritime and Hydrographic Agency, Germany).
  • Fintraffic / Digitraffic (Finland), licensed under CC BY 4.0.
  • Transpordiamet (Estonian Transport Administration).
  • Lithuanian Transport Safety Administration.
  • PING / SHOM (France).
  • Salvamento Marítimo (Spain).
  • Japan Coast Guard: NAVAREA XI.
  • US National Geospatial-Intelligence Agency: NAVAREA IV and XII.
• Station list: IMO GMDSS.1/Circ.21 via ITU, and national notices to mariners, checked by hand.
• NAVAREA outlines: simplified from the limits in IHO S-53 (PDF, 1.4 MB).
• navtex.net: The Navtex Archive, run by Geir Laastad (LA6LU), Norway.
• navtex.lv: receiver in Latvia by Konstantin Sedov.
• PA2OHH: receiver on the Valencia coast, Spain, hearing stations around the Mediterranean.
• Map: © OpenStreetMap contributors (ODbL), tiles by OpenFreeMap, schema © OpenMapTiles (CC BY 4.0), rendered with MapLibre GL JS (BSD-3-Clause). Coastlines on the overview maps: Natural Earth (public domain).

The message texts are issued by national coordinators, NAVAREA coordinators and meteorological services. Raw copies are stored exactly as published by each source.