{"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":65,"w":-180,"n":70,"e":-175},"res":0.05,"W":100,"H":100,"n":465,"cells":"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"}