NOAA S-57 chart cell
Gulf Intracoastal Waterway - Mississippi Sound
US5AL1DC
- Usage band
- Harbor · code 5
- Current edition
- 5.0
- Features
- 213
- S-57 layers
- 33
- Published
- Jun 9, 2026
- Manifest updated
- Jun 22, 2026, 2:51 PM UTC
Coverage
- North
- 30.30000° N
- South
- 30.22500° N
- West
- 88.27500° W
- East
- 88.20000° W
- Center
- 30.26250° N, 88.23750° W
- Bounds area
- 18 sq nm
- Feature density
- 12.1616 / sq nm
Chart Statistics
20 largest layers shown
- Average features per layer
- 6.5
- Smallest layer
- 1
- Largest layer
- 27
- Area sq km
- 60
- Features per sq km
- 3.54577
- M_QUAL Data quality 27
- DEPARE Depth area 26
- DEPCNT Depth contour 24
- PIPSOL 17
- SBDARE Seabed area 13
- DAYMAR 12
- BCNLAT Lateral beacon 11
- LIGHTS Light 10
- BCNSPP Special purpose beacon 8
- OBSTRN Obstruction 8
- PILPNT 8
- RETRFL 7
- SOUNDG Sounding 7
- UNSARE 5
- COALNE Coastline 3
- OFSPLF 3
- SLCONS Shoreline construction 3
- DRGARE 2
- MAGVAR Magnetic variation 2
- RECTRC 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/US5AL1DC.zip
- S-57 cell https://charts.openships.ai/noaa/s57/harbor/US5AL1DC/5.0/US5AL1DC.000
- GeoJSON https://charts.openships.ai/noaa/s57/harbor/US5AL1DC/5.0/US5AL1DC.geojson
- GeoParquet https://charts.openships.ai/noaa/s57/harbor/US5AL1DC/5.0/US5AL1DC.parquet
- Metadata JSON https://charts.openships.ai/noaa/s57/harbor/US5AL1DC/5.0/metadata.json
Editions
| Edition | Published | Metadata |
|---|---|---|
| 5.0 | Jun 9, 2026 | metadata.json |