Seamap
by Open WatersFree, no API key
A nautical chart style: buoys, lights with their sectors, traffic lanes and hazards from OpenStreetMap seamarks, rebuilt weekly, over shaded depths. Free with no API key under CC BY 4.0. Not for navigation.
const map = new maplibregl.Map({
container: "map",
style: "https://tiles.openwaters.io/seamap/style.json",
});