# Boundary Layer datasource notices

Release version: 2026.05.26.2

## Boundary Layer compiled dataset notice
Boundary Layer distributes the compiled release structure under ODbL, while upstream source-specific licence, attribution, and citation requirements remain in force.

## Coordinate reference system
- CRS: EPSG:4326 / WGS 84
- Axis order: Longitude, latitude
- Units: degrees
- Guidance: Coordinates are supplied in EPSG:4326 / WGS 84 longitude-latitude. Units are degrees. For distance, area, buffering, or engineering analysis, reproject to a suitable projected CRS first.

## Included public data sources

### Crown Estate England and Wales
- Source key: crown_estate_england_wales
- Licence: Public web map and API service
- Attribution: The Crown Estate publishes offshore wind spatial records for England and Wales through its public open data mapping services.
- Source URL: https://opendata-thecrownestate.opendata.arcgis.com/datasets/22a1be6fb0c5416e9369f97743f387b1_0/explore?location=52.748254%2C-1.318845%2C7
- API URL: https://services2.arcgis.com/PZklK9Q45mfMFuZs/arcgis/rest/services/WindSite_EngWalNI_TheCrownEstate/FeatureServer/0/query?outFields=*&where=1%3D1&f=geojson
- How the source is used: geometry=1; dossier=0; turbines=0

### Crown Estate Scotland
- Source key: crown_estate_scotland
- Licence: Public web map and API service
- Attribution: Crown Estate Scotland publishes offshore wind spatial records through its public mapping and geospatial services.
- Source URL: https://crown-estate-scotland-spatial-hub-coregis.hub.arcgis.com/datasets/b9c7d514362f40ceb3fe299b47aeb8b3_0/explore?location=56.704190%2C-2.570552%2C7
- API URL: https://services3.arcgis.com/nGV4jiurzcahJ9LV/arcgis/rest/services/Offshore_Wind_Crown_Estate_Scotland/FeatureServer/0/query?outFields=*&where=1%3D1&f=geojson
- How the source is used: geometry=1; dossier=0; turbines=0

### EMODnet
- Source key: emodnet
- Licence: Free and open public portal
- Attribution: EMODnet Human Activities is managed within the European Marine Observation and Data Network, supported by the EU and coordinated through DG MARE.
- Source URL: https://emodnet.ec.europa.eu/en/human-activities
- API URL: https://emodnet.ec.europa.eu/en/human-activities
- How the source is used: geometry=1; dossier=1; turbines=0

### EuroWindWakes
- Source key: eurowindwakes
- Licence: ODC Open Database License v1.0
- Attribution: Open European offshore wind turbine database by Jana Fischereit, Lukas Vollmer, and Akio Hansen, published via Zenodo under ODC Open Database License v1.0.
- Source URL: https://zenodo.org/records/17311571
- API URL: https://zenodo.org/records/17311571
- How the source is used: geometry=0; dossier=1; turbines=1

### France Geolittoral
- Source key: france_geolittoral
- Licence: Public government data portal
- Attribution: Geolittoral publishes French offshore wind parks and development zones through the French government coastal and marine planning portal.
- Source URL: https://www.geolittoral.developpement-durable.gouv.fr/acceder-aux-donnees-des-outils-cartographiques-a802.html#emr_nrj_eolienne
- API URL: https://www.geolittoral.developpement-durable.gouv.fr/acceder-aux-donnees-des-outils-cartographiques-a802.html#emr_nrj_eolienne
- How the source is used: geometry=1; dossier=0; turbines=0

## Research-derived content note
Structured winner facts can include research-backed values. Raw markdown reports and verbatim evidence quotes are not redistributed in the GeoPackage companion files.