Layers are explained in the manual, read refer to
Noaa buoy position layer based on a script that parsed the NOAA data.
UK Met Office forecast areas made manually with tracks and waypoints. gpx file Uk_fcst-areas.7z
Some offshore wind farm areas. A kml file converted with gpsbabel.gpx file NEUoffshore_windfarms.7z
Much more on this site www.justmagic.com/GM-GE.html
Download layers library is available online https://opencpn.org/wiki/dokuwiki/doku.php?id=opencpn:opencpn_user_manual:advanced_features:layers_library
Note that far from all kmz/kml are suitable for conversion. gpx file WEEZ.7z
Timezone boundaries, one track per timezone
AIS Beacons British Isles & French West Coast
List of Lights.7z
Windfarms - windfarms.7z
>Windfarms 2 - neuoffshore_windfarms.7z
Platforms.7z
TSS zones.7z
NOAA wx-buoy positions
UK forecast areas
French Atlantic forecast areas
Worldwide forecasts
Some Wrecks varia.7z
Africa and West Asia.
Antarctica
Australia
Canada
Central America
Dutch Overseas Territories
Europe Northern Part
Europe Southern Part
France North Atlantic area
France Mediterranean area
France Overseas Territories
Norwegian Overseas Territory
Pacific Islands
Russia
South America
South and East Asia
UK and Channel Islands
UK Overseas Territories
USA including Overseas Territories