NOAA S-57 chart cell
Lake Superior - Grand Island to Grand Portal Point, MI
US4MI2QN
- Usage band
- Approach · code 4
- Current edition
- 3.0
- Features
- 167
- S-57 layers
- 25
- Published
- Jun 8, 2026
- Manifest updated
- Jun 22, 2026, 2:51 PM UTC
Coverage
- North
- 46.80000° N
- South
- 46.50000° N
- West
- 86.70000° W
- East
- 86.40000° W
- Center
- 46.65000° N, 86.55000° W
- Bounds area
- 223 sq nm
- Feature density
- 0.7498 / sq nm
Chart Statistics
20 largest layers shown
- Average features per layer
- 6.7
- Smallest layer
- 1
- Largest layer
- 50
- Area sq km
- 764
- Features per sq km
- 0.21862
- DEPCNT Depth contour 50
- DEPARE Depth area 47
- OBSTRN Obstruction 10
- M_QUAL Data quality 6
- RIVERS River 6
- LNDRGN Land region 5
- UWTROC Underwater rock 5
- RECTRC 4
- COALNE Coastline 3
- LAKARE 3
- LIGHTS Light 3
- RESARE 3
- SBDARE Seabed area 3
- SEAARE Sea area 3
- SOUNDG Sounding 3
- BOYSPP Special purpose buoy 2
- LNDARE Land area 2
- WRECKS Wreck 2
- BCNSPP Special purpose beacon 1
- LNDELV 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/US4MI2QN.zip
- S-57 cell https://charts.openships.ai/noaa/s57/approach/US4MI2QN/3.0/US4MI2QN.000
- GeoJSON https://charts.openships.ai/noaa/s57/approach/US4MI2QN/3.0/US4MI2QN.geojson
- GeoParquet https://charts.openships.ai/noaa/s57/approach/US4MI2QN/3.0/US4MI2QN.parquet
- Metadata JSON https://charts.openships.ai/noaa/s57/approach/US4MI2QN/3.0/metadata.json
Editions
| Edition | Published | Metadata |
|---|---|---|
| 3.0 | Jun 8, 2026 | metadata.json |