Key points
- A diver is unreachable underwater — so the surfacing point is computed from what was known before entry.
- Diver and captain see different screens — underwater and on deck need different facts.
- Geospatial math runs in the database — pulling coordinates into the app is slower and gets it wrong.
Development record
- Sector
- Recreational Diving Safety
- Form
- Web + App
- Status
- In development
- Scale
- Undisclosed
- Period
- 2026-06 ~ 2026-08
- Stack
- React NativeSupabasePostGIS
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