{"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":25,"w":30,"n":30,"e":35},"res":0.05,"W":100,"H":100,"n":461,"cells":"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"}