Hosted by the Canadian Red Cross (CRC), this session stems from its coastal-resilience work in Atlantic Canada and a shared global need to adapt to and mitigate coastal hazards.

Part 1 features a 15-minute presentation: why reliable coastal landform and landscape data in OpenStreetMap matter, especially in humanitarian contexts; how similar coasts across the Atlantic (Canada, Scotland, Ireland, Wales/Cornwall, Brittany/Normandy, Galicia/Cantabria, Norway, Iceland, the Faroes) are currently mapped and tagged, to identify where practices converge or diverge, and which common challenges arise.

Part 2 (~35 minutes) opens with discussion among panellists and participants, using Menti polls to crowdsource interpretations of coastal imagery, datasets, and tools in use, as well as difficulties encountered. We will probe challenges noted earlier and invite ideas/solutions. Example topics: representing coastal dynamism and intertidal hydrology, balancing portability and standardization with local specificity, reinforcing semantic and style-independent tagging, avoiding mapping for particular renderers (critical as OSM moves to vector tiles), and improving validation and QA workflows.

The session concludes (~10 minutes) by sharing CRC’s workflow, brainstorming next steps, and inviting collaboration on documentation, MapRoulette templates, and other practical ways to advance mapping and tagging of coastal landforms.