{"generated":"2026-10-19","source":"OpenStreetMap natural=reef / natural=shoal / natural=coastline (coarse warning layer)","licence":"ODbL 1.0","attribution":"© OpenStreetMap contributors, Open Database License (openstreetmap.org/copyright). Derived database: docs/launch/odbl/.","block":{"s":5,"w":75,"n":10,"e":80},"res":0.05,"W":100,"H":100,"n":313,"cells":"AAAAgAAAAAAAABgAAAAADAAAAAAAAAMAAAAAAEAAAAAAAAAgAAAAAAQAAAAAAAAGAAEAAABAAAAAAAAAwABwAAAEAAAAAAAAGAAPAAAAQAAAAAAAAQAB8AAABAAAAAAAADAAHwAAAGAAAAAAAAIABdAAAAIAAAAAAAAgAGAAAAAgAAAAAAAGAAYAAAACAAAAAAAAIAAEAAAAMAAAAAAAAwAgAAAAAQAAAAAAABxgAQAAABgAAAAAAAf+ABAAAACAAAAAAAPn8AAAAAAMAAAAAADvQcAAAAAAQAAAAAH4AA9wAAAABgAAAAA0AAA/wAAAACAAAAAGAAAAHwAAAAIAAAAAwAAAAHAAAAAwAAAAGAAAAAcAAAABgAAAAYAAAAAgAAAADAAAABgAAAACAAAAAEAAAAGAAAAAIAAAAAYAAAA4AAAAAwAAAAAwAAACAAAAADAAAAABgAAAIAAAAAIAAAAADAAAAgAAAAAgAAAAAEAAACAAAAAWAAAAAAYAAAYAAAABwAAAAAAwAABAAAAADAAAAAABgAAMAAAAAYAAAAAADAADgAAAABgAAAAAAHAA4AAAAAOAAAAAAAGAGAAAAAB4AAAAAAAMDwAAAAAHgAAAAAAAeYAAAAAAKAAAAAAAAPAAAAAAA4AAAAAAAAAAAAAAACgAAAAAAAAAAAAAAAOAAAAAAAAAAAAAAAAwAAAAAAAAAAAAAAABAAAAAAAAAAAAAAAAEAAAAAAAAAAAAAAAAQAAAAAAAAAAAAAAABAAAAAAAAAAAAAAAAGAAAAAAAAAAAAAAAAYAAAAAAAAAAAAAAABAAAAAAAAAAAAAAAAEAAAAAAAAAAAAAAAAYAAAAAAAAAAAAAAAAgAAAAAAAAAAAAAAACAAAAAAAAAAAAAAAAIAAAAAAAAAAAAAAAAgAAAAAAAAAAAAAAACAAAAAAAAAAAAAAAAMAAAAAAAAAAAAAAAAwAAAAAAAAAAAAAAADAAAAAAAAAAAAAAAAEAAAAAAAAAAAAAAAAwAAAAAAAAAAAAAAADAAAAAAAAAAAAAAAAEAAAAAAAAAAAAAAAAQAAAAAAAAAAAAAAABAAAAAAAAAAAAAAAAGAAAAAAAAAAAAAAAAIAAAAAAAAAAAAAAAAwAAAAAAAAAAAAAAABAAAAAAAAAAAAAAAAEAAAAAAAAAAAAAAAAQAAAAAAAAAAAAAAABAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA="}