NOAA S-57 chart cell
Lake Huron - North East of Rockport, MI
US4MI1MJ
- Usage band
- Approach · code 4
- Current edition
- 2.0
- Features
- 35
- S-57 layers
- 16
- Published
- Jul 25, 2024
- Manifest updated
- Jun 22, 2026, 2:51 PM UTC
Coverage
- North
- 45.60000° N
- South
- 45.30000° N
- West
- 83.10000° W
- East
- 82.80000° W
- Center
- 45.45000° N, 82.95000° W
- Bounds area
- 228 sq nm
- Feature density
- 0.1538 / sq nm
Chart Statistics
16 largest layers shown
- Average features per layer
- 2.2
- Smallest layer
- 1
- Largest layer
- 9
- Area sq km
- 781
- Features per sq km
- 0.04483
- RECTRC 9
- SBDARE Seabed area 9
- M_COVR Coverage 2
- RESARE 2
- SOUNDG Sounding 2
- BOYSPP Special purpose buoy 1
- DEPARE Depth area 1
- LIGHTS Light 1
- LOCMAG 1
- M_NPUB 1
- M_NSYS 1
- M_QUAL Data quality 1
- MAGVAR Magnetic variation 1
- MIPARE 1
- RDOCAL 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/US4MI1MJ.zip
- S-57 cell https://charts.openships.ai/noaa/s57/approach/US4MI1MJ/2.0/US4MI1MJ.000
- GeoJSON https://charts.openships.ai/noaa/s57/approach/US4MI1MJ/2.0/US4MI1MJ.geojson
- GeoParquet https://charts.openships.ai/noaa/s57/approach/US4MI1MJ/2.0/US4MI1MJ.parquet
- Metadata JSON https://charts.openships.ai/noaa/s57/approach/US4MI1MJ/2.0/metadata.json
Editions
| Edition | Published | Metadata |
|---|---|---|
| 2.0 | Jul 25, 2024 | metadata.json |