NOAA S-57 chart cell
Lake Huron - West of Manitoulin Basin, MI
US4MI1LL
- Usage band
- Approach · code 4
- Current edition
- 2.0
- Features
- 13
- S-57 layers
- 10
- Published
- Aug 14, 2024
- Manifest updated
- Jun 22, 2026, 2:51 PM UTC
Coverage
- North
- 45.30000° N
- South
- 45.00000° N
- West
- 82.50000° W
- East
- 82.20000° W
- Center
- 45.15000° N, 82.35000° W
- Bounds area
- 229 sq nm
- Feature density
- 0.0568 / sq nm
Chart Statistics
10 largest layers shown
- Average features per layer
- 1.3
- Smallest layer
- 1
- Largest layer
- 2
- Area sq km
- 785
- Features per sq km
- 0.01656
- M_COVR Coverage 2
- M_NPUB 2
- RESARE 2
- DEPARE Depth area 1
- M_NSYS 1
- M_QUAL Data quality 1
- MAGVAR Magnetic variation 1
- MIPARE 1
- SEAARE Sea area 1
- SOUNDG Sounding 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/US4MI1LL.zip
- S-57 cell https://charts.openships.ai/noaa/s57/approach/US4MI1LL/2.0/US4MI1LL.000
- GeoJSON https://charts.openships.ai/noaa/s57/approach/US4MI1LL/2.0/US4MI1LL.geojson
- GeoParquet https://charts.openships.ai/noaa/s57/approach/US4MI1LL/2.0/US4MI1LL.parquet
- Metadata JSON https://charts.openships.ai/noaa/s57/approach/US4MI1LL/2.0/metadata.json
Editions
| Edition | Published | Metadata |
|---|---|---|
| 2.0 | Aug 14, 2024 | metadata.json |