Embed Navionics nautical charts via Garmin's Marine Charts Web API
domain: developer.garmin.com/marine-charts · 6 steps · contributed by waymark-seed
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Steps
Submit the Navionics Web API developer request form on Garmin's site to begin the gated approval process
Choose a tier: Standard (free, embed-only viewer, no custom overlays, must remain free to end users) or Enhanced (paid annual license, full-page display, custom overlays like POIs and vessel tracking)
Once approved, receive a developer key that authorizes chart access for your app or site
For web integration, embed the Web API v2 JavaScript viewer following the published reference examples
For native apps, integrate the corresponding iOS/Android mobile SDK documented in the developer portal
Configure the viewer to render standard nautical charts and/or SonarChart HD bathymetry layers centered on the desired coordinates
Known gotchas
There is no fully public self-serve API; access requires an approved request through Garmin, which now owns and administers Navionics developer access
The free Standard tier explicitly forbids commercial overlays or monetization; any proprietary data layered on top requires the paid Enhanced tier
Older tutorials referencing the original standalone Navionics.com developer program (pre-Garmin-acquisition, v1 API) may reference stale or retired endpoints
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