NOAA S-57 chart cell
Mobile Bay and Gulf Intracoastal Waterway
US5AL1CH
- Usage band
- Harbor · code 5
- Current edition
- 3.0
- Features
- 274
- S-57 layers
- 35
- Published
- Dec 16, 2025
- Manifest updated
- Jun 22, 2026, 2:51 PM UTC
Coverage
- North
- 30.30000° N
- South
- 30.22500° N
- West
- 87.90000° W
- East
- 87.82500° W
- Center
- 30.26250° N, 87.86250° W
- Bounds area
- 18 sq nm
- Feature density
- 15.6446 / sq nm
Chart Statistics
20 largest layers shown
- Average features per layer
- 7.8
- Smallest layer
- 1
- Largest layer
- 97
- Area sq km
- 60
- Features per sq km
- 4.56122
- SLCONS Shoreline construction 97
- DEPARE Depth area 17
- COALNE Coastline 16
- OBSTRN Obstruction 16
- DEPCNT Depth contour 14
- SBDARE Seabed area 14
- BCNLAT Lateral beacon 13
- DAYMAR 13
- RETRFL 13
- LAKARE 8
- LNDRGN Land region 8
- M_QUAL Data quality 7
- SOUNDG Sounding 7
- M_NPUB 3
- SEAARE Sea area 3
- BUISGL 2
- DMPGRD 2
- LIGHTS Light 2
- LNDMRK 2
- UNSARE 2
Nearby Chart Cells
Harbor usage band
Current Edition Files
The NOAA ZIP archive is the upstream source for this chart cell; the other files are Open Ships generated derivatives for web and GIS use.
- Original NOAA ZIP archive https://www.charts.noaa.gov/ENCs/US5AL1CH.zip
- S-57 cell https://charts.openships.ai/noaa/s57/harbor/US5AL1CH/3.0/US5AL1CH.000
- GeoJSON https://charts.openships.ai/noaa/s57/harbor/US5AL1CH/3.0/US5AL1CH.geojson
- GeoParquet https://charts.openships.ai/noaa/s57/harbor/US5AL1CH/3.0/US5AL1CH.parquet
- Metadata JSON https://charts.openships.ai/noaa/s57/harbor/US5AL1CH/3.0/metadata.json
Editions
| Edition | Published | Metadata |
|---|---|---|
| 3.0 | Dec 16, 2025 | metadata.json |