NOAA S-57 chart cell
Lake Huron - Offshore East of Harrisville, MI
US4MI1JJ
- Usage band
- Approach · code 4
- Current edition
- 1.0
- Features
- 17
- S-57 layers
- 11
- Published
- Oct 20, 2023
- Manifest updated
- Jun 22, 2026, 2:51 PM UTC
Coverage
- North
- 44.70000° N
- South
- 44.40000° N
- West
- 83.10000° W
- East
- 82.80000° W
- Center
- 44.55000° N, 82.95000° W
- Bounds area
- 231 sq nm
- Feature density
- 0.0735 / sq nm
Chart Statistics
11 largest layers shown
- Average features per layer
- 1.5
- Smallest layer
- 1
- Largest layer
- 3
- Area sq km
- 793
- Features per sq km
- 0.02144
- MAGVAR Magnetic variation 3
- SOUNDG Sounding 3
- RECTRC 2
- RESARE 2
- DEPARE Depth area 1
- M_COVR Coverage 1
- M_NPUB 1
- M_NSYS 1
- M_QUAL Data quality 1
- MIPARE 1
- SEAARE Sea area 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/US4MI1JJ.zip
- S-57 cell https://charts.openships.ai/noaa/s57/approach/US4MI1JJ/1.0/US4MI1JJ.000
- GeoJSON https://charts.openships.ai/noaa/s57/approach/US4MI1JJ/1.0/US4MI1JJ.geojson
- GeoParquet https://charts.openships.ai/noaa/s57/approach/US4MI1JJ/1.0/US4MI1JJ.parquet
- Metadata JSON https://charts.openships.ai/noaa/s57/approach/US4MI1JJ/1.0/metadata.json
Editions
| Edition | Published | Metadata |
|---|---|---|
| 1.0 | Oct 20, 2023 | metadata.json |