NOAA S-57 chart cell
Lake Michigan - North Shore Channel to Lake Forest, IL
US4IL1YX
- Usage band
- Approach · code 4
- Current edition
- 2.2
- Features
- 479
- S-57 layers
- 37
- Published
- Apr 22, 2026
- Manifest updated
- Jun 22, 2026, 2:51 PM UTC
Coverage
- North
- 42.30000° N
- South
- 42.00000° N
- West
- 87.90000° W
- East
- 87.60000° W
- Center
- 42.15000° N, 87.75000° W
- Bounds area
- 241 sq nm
- Feature density
- 1.9914 / sq nm
Chart Statistics
20 largest layers shown
- Average features per layer
- 12.9
- Smallest layer
- 1
- Largest layer
- 81
- Area sq km
- 825
- Features per sq km
- 0.5806
- SLCONS Shoreline construction 81
- DEPARE Depth area 68
- DEPCNT Depth contour 66
- COALNE Coastline 53
- OBSTRN Obstruction 37
- PIPSOL 21
- BRIDGE 19
- BUAARE 15
- CBLOHD 12
- LIGHTS Light 11
- LNDMRK 11
- RIVERS River 11
- SBDARE Seabed area 11
- WRECKS Wreck 8
- UWTROC Underwater rock 7
- BCNLAT Lateral beacon 6
- M_QUAL Data quality 6
- SOUNDG Sounding 5
- BCNSPP Special purpose beacon 3
- DAYMAR 3
Nearby Chart Cells
Approach 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/US4IL1YX.zip
- S-57 base cell https://charts.openships.ai/noaa/s57/approach/US4IL1YX/2.2/US4IL1YX.000
- S-57 update 001 https://charts.openships.ai/noaa/s57/approach/US4IL1YX/2.2/US4IL1YX.001
- S-57 update 002 https://charts.openships.ai/noaa/s57/approach/US4IL1YX/2.2/US4IL1YX.002
- GeoJSON https://charts.openships.ai/noaa/s57/approach/US4IL1YX/2.2/US4IL1YX.geojson
- GeoParquet https://charts.openships.ai/noaa/s57/approach/US4IL1YX/2.2/US4IL1YX.parquet
- Metadata JSON https://charts.openships.ai/noaa/s57/approach/US4IL1YX/2.2/metadata.json
Editions
| Edition | Published | Metadata |
|---|---|---|
| 2.2 | Apr 22, 2026 | metadata.json |