NOAA S-57 chart cell
Lake Huron - Thunder Bay and Sulphur Island, MI
US4MI1KH
- Usage band
- Approach · code 4
- Current edition
- 1.0
- Features
- 92
- S-57 layers
- 23
- Published
- Jan 25, 2024
- Manifest updated
- Jun 22, 2026, 2:51 PM UTC
Coverage
- North
- 45.00000° N
- South
- 44.70000° N
- West
- 83.70000° W
- East
- 83.40000° W
- Center
- 44.85000° N, 83.55000° W
- Bounds area
- 230 sq nm
- Feature density
- 0.4 / sq nm
Chart Statistics
20 largest layers shown
- Average features per layer
- 4
- Smallest layer
- 1
- Largest layer
- 19
- Area sq km
- 789
- Features per sq km
- 0.11662
- DEPARE Depth area 19
- DEPCNT Depth contour 18
- M_QUAL Data quality 12
- COALNE Coastline 7
- SEAARE Sea area 5
- RESARE 4
- LNDARE Land area 3
- LNDRGN Land region 3
- UWTROC Underwater rock 3
- BUISGL 2
- LIGHTS Light 2
- LNDMRK 2
- SOUNDG Sounding 2
- BUAARE 1
- FSHFAC 1
- M_COVR Coverage 1
- M_NPUB 1
- M_NSYS 1
- MAGVAR Magnetic variation 1
- OBSTRN Obstruction 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/US4MI1KH.zip
- S-57 cell https://charts.openships.ai/noaa/s57/approach/US4MI1KH/1.0/US4MI1KH.000
- GeoJSON https://charts.openships.ai/noaa/s57/approach/US4MI1KH/1.0/US4MI1KH.geojson
- GeoParquet https://charts.openships.ai/noaa/s57/approach/US4MI1KH/1.0/US4MI1KH.parquet
- Metadata JSON https://charts.openships.ai/noaa/s57/approach/US4MI1KH/1.0/metadata.json
Editions
| Edition | Published | Metadata |
|---|---|---|
| 1.0 | Jan 25, 2024 | metadata.json |