NOAA S-57 chart cell
Lake Michigan - Millecoquins River to Point Epoufette, MI
US4MI2OR
- Usage band
- Approach · code 4
- Current edition
- 2.0
- Features
- 581
- 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
- 85.50000° W
- East
- 85.20000° W
- Center
- 46.05000° N, 85.35000° W
- Bounds area
- 225 sq nm
- Feature density
- 2.5803 / sq nm
Chart Statistics
20 largest layers shown
- Average features per layer
- 20.8
- Smallest layer
- 1
- Largest layer
- 198
- Area sq km
- 772
- Features per sq km
- 0.75229
- DEPCNT Depth contour 198
- DEPARE Depth area 181
- OBSTRN Obstruction 55
- COALNE Coastline 31
- FSHFAC 23
- LNDRGN Land region 15
- SBDARE Seabed area 13
- UWTROC Underwater rock 12
- LNDARE Land area 8
- RIVERS River 8
- SEAARE Sea area 7
- SLCONS Shoreline construction 6
- BOYLAT Lateral buoy 3
- M_QUAL Data quality 3
- BUISGL 2
- LIGHTS Light 2
- MAGVAR Magnetic variation 2
- SOUNDG Sounding 2
- BCNSPP Special purpose beacon 1
- BUAARE 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/US4MI2OR.zip
- S-57 cell https://charts.openships.ai/noaa/s57/approach/US4MI2OR/2.0/US4MI2OR.000
- GeoJSON https://charts.openships.ai/noaa/s57/approach/US4MI2OR/2.0/US4MI2OR.geojson
- GeoParquet https://charts.openships.ai/noaa/s57/approach/US4MI2OR/2.0/US4MI2OR.parquet
- Metadata JSON https://charts.openships.ai/noaa/s57/approach/US4MI2OR/2.0/metadata.json
Editions
| Edition | Published | Metadata |
|---|---|---|
| 2.0 | Jan 5, 2026 | metadata.json |