Credits

Forecasts

Weather and marine forecasts are supplied by Open-Meteo under CC BY 4.0. Kelp Pie batches and caches that source data, then modifies it into a conservative beach-facing surf-height range and rating. The underlying models currently include UKMO Seamless wind (UKV and global coverage), ECMWF WAM waves and Météo-France swell partitions; availability can change upstream.

Tides

Tide predictions are calculated locally from TICON-4: Hart-Davis, M. G., Dettmering, D. and Seitz, F. (2025), TICON-4: TIdal CONstants based on GESLA-4 sea-level records, SEANOE, doi:10.17882/109129. TICON-4 is licensed under CC BY 4.0. We select and adjust nearby gauges and reconstruct the tide curve; predicted heights and times are therefore modified data, not official navigation information.

Maps

Public maps use native vector water and land-cover geometry supplied by OpenFreeMap, using the OpenMapTiles schema and data from © OpenStreetMap contributors under the Open Database Licence. Kelp Pie applies its own restrained land, water and coastline colours; no gray raster underlay or faded approximate coast is used. At close zoom, World Imagery transitions over the vector map between zoom levels 11.5 and 12.5. Imagery credits Esri, Maxar, Earthstar Geographics and the GIS User Community. Provider attribution is also shown on the map.

Earlier OpenStreetMap beach and sand geometry, vector-tile archives packaged with Protomaps, and public-domain Natural Earth 1:110m land and country-outline assets remain in the project. Those retained datasets are not the current public detailed basemap.

Typography

The wordmark uses a compact, self-hosted Archivo Black font by Héctor Gatti and the Omnibus-Type team, distributed under the SIL Open Font License 1.1. The original pie illustration remains unchanged.

Live buoys

Nearshore readings come from the National Network of Regional Coastal Monitoring Programmes of England. Contains public sector information licensed under the Open Government Licence v3.0.

Offshore readings come from the NOAA National Data Buoy Center. NOAA-produced data is public-domain US Government information unless marked otherwise; Kelp Pie acknowledges NOAA/NDBC as the source. Some UK light-vessel and platform readings are relayed through NDBC.

Local listings

Cam, surf-school and independent-shaper links are researched from the operators’ public websites. Kelp Pie does not copy or re-host their video streams, and a listing does not imply endorsement. Corrections are welcome at paul@kelp-pie.co.uk.