NOAA S-57 chart cell
Green Bay - Bark River to Whaleback Shoal, MI
US4MI2ML
- Usage band
- Approach · code 4
- Current edition
- 2.0
- Features
- 164
- S-57 layers
- 26
- Published
- Sep 17, 2025
- Manifest updated
- Jun 22, 2026, 2:51 PM UTC
Coverage
- North
- 45.60000° N
- South
- 45.30000° N
- West
- 87.30000° W
- East
- 87.00000° W
- Center
- 45.45000° N, 87.15000° W
- Bounds area
- 228 sq nm
- Feature density
- 0.7206 / sq nm
Chart Statistics
20 largest layers shown
- Average features per layer
- 6.3
- Smallest layer
- 1
- Largest layer
- 45
- Area sq km
- 781
- Features per sq km
- 0.21008
- SBDARE Seabed area 45
- DEPARE Depth area 39
- DEPCNT Depth contour 38
- M_QUAL Data quality 4
- MAGVAR Magnetic variation 4
- RECTRC 4
- BOYLAT Lateral buoy 3
- SEAARE Sea area 3
- UWTROC Underwater rock 3
- BOYISD 2
- FERYRT 2
- LIGHTS Light 2
- SOUNDG Sounding 2
- COALNE Coastline 1
- FOGSIG 1
- LNDARE Land area 1
- LNDRGN Land region 1
- M_COVR Coverage 1
- M_NPUB 1
- M_NSYS 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/US4MI2ML.zip
- S-57 cell https://charts.openships.ai/noaa/s57/approach/US4MI2ML/2.0/US4MI2ML.000
- GeoJSON https://charts.openships.ai/noaa/s57/approach/US4MI2ML/2.0/US4MI2ML.geojson
- GeoParquet https://charts.openships.ai/noaa/s57/approach/US4MI2ML/2.0/US4MI2ML.parquet
- Metadata JSON https://charts.openships.ai/noaa/s57/approach/US4MI2ML/2.0/metadata.json
Editions
| Edition | Published | Metadata |
|---|---|---|
| 2.0 | Sep 17, 2025 | metadata.json |