NOAA S-57 chart cell
St Clair River to Lake Huron, MI - Canada
US4MI1EL
- Usage band
- Approach · code 4
- Current edition
- 2.4
- Features
- 315
- S-57 layers
- 46
- Published
- Dec 22, 2025
- Manifest updated
- Jun 22, 2026, 2:51 PM UTC
Coverage
- North
- 43.20000° N
- South
- 42.90000° N
- West
- 82.50000° W
- East
- 82.20000° W
- Center
- 43.05000° N, 82.35000° W
- Bounds area
- 237 sq nm
- Feature density
- 1.3286 / sq nm
Chart Statistics
20 largest layers shown
- Average features per layer
- 6.8
- Smallest layer
- 1
- Largest layer
- 29
- Area sq km
- 813
- Features per sq km
- 0.38737
- DEPARE Depth area 29
- DEPCNT Depth contour 29
- LNDMRK 25
- LIGHTS Light 22
- SLCONS Shoreline construction 21
- COALNE Coastline 20
- M_QUAL Data quality 17
- BOYLAT Lateral buoy 15
- SILTNK 11
- SBDARE Seabed area 10
- RIVERS River 9
- RECTRC 8
- BUISGL 7
- BRIDGE 6
- BUAARE 6
- OBSTRN Obstruction 6
- WRECKS Wreck 6
- DAYMAR 5
- PIPSOL 5
- PRDARE 5
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/US4MI1EL.zip
- S-57 base cell https://charts.openships.ai/noaa/s57/approach/US4MI1EL/2.4/US4MI1EL.000
- S-57 update 001 https://charts.openships.ai/noaa/s57/approach/US4MI1EL/2.4/US4MI1EL.001
- S-57 update 002 https://charts.openships.ai/noaa/s57/approach/US4MI1EL/2.4/US4MI1EL.002
- S-57 update 003 https://charts.openships.ai/noaa/s57/approach/US4MI1EL/2.4/US4MI1EL.003
- S-57 update 004 https://charts.openships.ai/noaa/s57/approach/US4MI1EL/2.4/US4MI1EL.004
- GeoJSON https://charts.openships.ai/noaa/s57/approach/US4MI1EL/2.4/US4MI1EL.geojson
- GeoParquet https://charts.openships.ai/noaa/s57/approach/US4MI1EL/2.4/US4MI1EL.parquet
- Metadata JSON https://charts.openships.ai/noaa/s57/approach/US4MI1EL/2.4/metadata.json
Editions
| Edition | Published | Metadata |
|---|---|---|
| 2.4 | Dec 22, 2025 | metadata.json |