{"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":-10,"w":160,"n":-5,"e":165},"res":0.05,"W":100,"H":100,"n":260,"cells":"AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAgAAAAAAAAAAAAAAACAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAQAAAAAAAAAAAAAAABATgAAAAAAAAAAAAAAB+AAAAAAAAAAAAAAAH4AAAAAAYAAAAAAAAYgAAAAABwAAAAAAAAzAAAAAAAAAAAAAAABmAAAAAAAAAAAAAAAGMAAAAAAAAAAAAAAAQYAAAAAAAAAAAAAABDgAAAAAAAAAAAAAAEOAAAAAAAAAAAAAAAY8AAAAAAAAAAAACAAjgAAAAAAAAAAAAIALHAAAAAAAAAAAAAwAsGAAAAAAAAAAAAD4AwMAAAAAAAAAAAAHwBg4AAAAAAAAAAAAf4GBgAAAAAAAAAAAA/gMGAAAAAAAAAAAAB+AcMAAAAAAAAAAAADAAYwAAAAAAAAAAAADAAzAAAAAAAAAAAAAcADvAAAAAAAAAAAAAAAD+AAAAAAAAAAAD/AAG+AAAAAAAAAAAAHYAPYAAAAAAAAAAAAHmAfwAAAAAAAAAAAAGAA7AAAAAAAAAAAAAMAB8AAAAAAAAAAAAAQADwAAAAAAAAAAAAB4ADA4AAAAAAAAAAABwAADAAAAAAAAAA/wHgAAGAAAAAAAAAAB4+AAAQAAAAAAAAAAC+AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA="}