NOAA S-57 chart cell
Lake Michigan - Scott Point to Rock River, MI
US4MI2OQ
- Usage band
- Approach · code 4
- Current edition
- 2.0
- Features
- 312
- S-57 layers
- 28
- Published
- Jan 5, 2026
- Manifest updated
- Jun 22, 2026, 2:51 PM UTC
Coverage
- North
- 46.20000° N
- South
- 45.90000° N
- West
- 85.80000° W
- East
- 85.50000° W
- Center
- 46.05000° N, 85.65000° W
- Bounds area
- 225 sq nm
- Feature density
- 1.3856 / sq nm
Chart Statistics
20 largest layers shown
- Average features per layer
- 11.1
- Smallest layer
- 1
- Largest layer
- 70
- Area sq km
- 772
- Features per sq km
- 0.40398
- DEPCNT Depth contour 70
- DEPARE Depth area 69
- OBSTRN Obstruction 46
- RIVERS River 24
- FSHFAC 23
- COALNE Coastline 18
- SBDARE Seabed area 12
- LNDRGN Land region 11
- UWTROC Underwater rock 9
- SEAARE Sea area 4
- LNDARE Land area 3
- BUAARE 2
- M_QUAL Data quality 2
- MAGVAR Magnetic variation 2
- PILPNT 2
- RECTRC 2
- SOUNDG Sounding 2
- BOYLAT Lateral buoy 1
- CBLSUB 1
- CTRPNT 1
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/US4MI2OQ.zip
- S-57 cell https://charts.openships.ai/noaa/s57/approach/US4MI2OQ/2.0/US4MI2OQ.000
- GeoJSON https://charts.openships.ai/noaa/s57/approach/US4MI2OQ/2.0/US4MI2OQ.geojson
- GeoParquet https://charts.openships.ai/noaa/s57/approach/US4MI2OQ/2.0/US4MI2OQ.parquet
- Metadata JSON https://charts.openships.ai/noaa/s57/approach/US4MI2OQ/2.0/metadata.json
Editions
| Edition | Published | Metadata |
|---|---|---|
| 2.0 | Jan 5, 2026 | metadata.json |