NOAA S-57 chart cell
South End of Lake Michigan - Chicago to Milwaukee
US2GRLAB
- Usage band
- General · code 2
- Current edition
- 1.0
- Features
- 442
- S-57 layers
- 37
- Published
- May 7, 2026
- Manifest updated
- Jun 22, 2026, 2:51 PM UTC
Coverage
- North
- 43.20000° N
- South
- 38.40000° N
- West
- 91.20000° W
- East
- 86.40000° W
- Center
- 40.80000° N, 88.80000° W
- Bounds area
- 62,855 sq nm
- Feature density
- 0.007 / sq nm
Chart Statistics
20 largest layers shown
- Average features per layer
- 11.9
- Smallest layer
- 1
- Largest layer
- 65
- Area sq km
- 215,586
- Features per sq km
- 0.00205
- LIGHTS Light 65
- LNDMRK 35
- RECTRC 35
- DEPCNT Depth contour 23
- DEPARE Depth area 21
- WRECKS Wreck 21
- BUAARE 20
- BCNSPP Special purpose beacon 19
- RIVERS River 19
- FOGSIG 18
- SLCONS Shoreline construction 18
- BOYLAT Lateral buoy 15
- LNDARE Land area 15
- BCNLAT Lateral beacon 14
- OBSTRN Obstruction 14
- MAGVAR Magnetic variation 13
- SOUNDG Sounding 11
- COALNE Coastline 9
- DAYMAR 9
- UWTROC Underwater rock 8
Nearby Chart Cells
General 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/US2GRLAB.zip
- S-57 cell https://charts.openships.ai/noaa/s57/general/US2GRLAB/1.0/US2GRLAB.000
- GeoJSON https://charts.openships.ai/noaa/s57/general/US2GRLAB/1.0/US2GRLAB.geojson
- GeoParquet https://charts.openships.ai/noaa/s57/general/US2GRLAB/1.0/US2GRLAB.parquet
- Metadata JSON https://charts.openships.ai/noaa/s57/general/US2GRLAB/1.0/metadata.json
Editions
| Edition | Published | Metadata |
|---|---|---|
| 1.0 | May 7, 2026 | metadata.json |