NOAA S-57 chart cell
Lake Huron - South of Saint Mary's River, MI
US4MI1MG
- Usage band
- Approach · code 4
- Current edition
- 1.0
- Features
- 139
- S-57 layers
- 33
- Published
- Jun 25, 2024
- Manifest updated
- Jun 22, 2026, 2:51 PM UTC
Coverage
- North
- 45.60000° N
- South
- 45.30000° N
- West
- 84.00000° W
- East
- 83.70000° W
- Center
- 45.45000° N, 83.85000° W
- Bounds area
- 228 sq nm
- Feature density
- 0.6107 / sq nm
Chart Statistics
20 largest layers shown
- Average features per layer
- 4.2
- Smallest layer
- 1
- Largest layer
- 20
- Area sq km
- 781
- Features per sq km
- 0.17806
- DEPARE Depth area 20
- DEPCNT Depth contour 19
- M_QUAL Data quality 10
- UWTROC Underwater rock 10
- LIGHTS Light 9
- LNDMRK 8
- RECTRC 6
- SLCONS Shoreline construction 6
- RIVERS River 5
- SOUNDG Sounding 5
- DAYMAR 4
- LNDRGN Land region 4
- SBDARE Seabed area 4
- BCNLAT Lateral beacon 3
- COALNE Coastline 3
- CTRPNT 3
- BCNSPP Special purpose beacon 2
- BUISGL 2
- RESARE 2
- 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/US4MI1MG.zip
- S-57 cell https://charts.openships.ai/noaa/s57/approach/US4MI1MG/1.0/US4MI1MG.000
- GeoJSON https://charts.openships.ai/noaa/s57/approach/US4MI1MG/1.0/US4MI1MG.geojson
- GeoParquet https://charts.openships.ai/noaa/s57/approach/US4MI1MG/1.0/US4MI1MG.parquet
- Metadata JSON https://charts.openships.ai/noaa/s57/approach/US4MI1MG/1.0/metadata.json
Editions
| Edition | Published | Metadata |
|---|---|---|
| 1.0 | Jun 25, 2024 | metadata.json |