{"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":50,"w":155,"n":55,"e":160},"res":0.05,"W":100,"H":100,"n":442,"cells":"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"}