NOAA S-57 chart cell
Lake Huron - St Martin Bay, MI
US4MI1OD
- Usage band
- Approach · code 4
- Current edition
- 1.0
- Features
- 290
- S-57 layers
- 30
- Published
- Mar 5, 2024
- Manifest updated
- Jun 22, 2026, 2:51 PM UTC
Coverage
- North
- 46.20000° N
- South
- 45.90000° N
- West
- 84.90000° W
- East
- 84.60000° W
- Center
- 46.05000° N, 84.75000° W
- Bounds area
- 225 sq nm
- Feature density
- 1.2879 / sq nm
Chart Statistics
20 largest layers shown
- Average features per layer
- 9.7
- Smallest layer
- 1
- Largest layer
- 47
- Area sq km
- 772
- Features per sq km
- 0.3755
- COALNE Coastline 47
- UWTROC Underwater rock 44
- DEPCNT Depth contour 39
- DEPARE Depth area 34
- LNDRGN Land region 22
- OBSTRN Obstruction 19
- LNDARE Land area 14
- RIVERS River 11
- M_QUAL Data quality 10
- LAKARE 8
- SBDARE Seabed area 5
- SLCONS Shoreline construction 5
- SLOTOP 5
- SEAARE Sea area 4
- BUISGL 3
- LIGHTS Light 3
- LNDMRK 2
- MAGVAR Magnetic variation 2
- RESARE 2
- BRIDGE 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/US4MI1OD.zip
- S-57 cell https://charts.openships.ai/noaa/s57/approach/US4MI1OD/1.0/US4MI1OD.000
- GeoJSON https://charts.openships.ai/noaa/s57/approach/US4MI1OD/1.0/US4MI1OD.geojson
- GeoParquet https://charts.openships.ai/noaa/s57/approach/US4MI1OD/1.0/US4MI1OD.parquet
- Metadata JSON https://charts.openships.ai/noaa/s57/approach/US4MI1OD/1.0/metadata.json
Editions
| Edition | Published | Metadata |
|---|---|---|
| 1.0 | Mar 5, 2024 | metadata.json |