NOAA S-57 chart cell
Lake Huron - Ipperwash Scarp South, MI
US4MI1HL
- Usage band
- Approach · code 4
- Current edition
- 2.0
- Features
- 18
- S-57 layers
- 11
- Published
- Aug 14, 2024
- Manifest updated
- Jun 22, 2026, 2:51 PM UTC
Coverage
- North
- 44.10000° N
- South
- 43.80000° N
- West
- 82.50000° W
- East
- 82.20000° W
- Center
- 43.95000° N, 82.35000° W
- Bounds area
- 234 sq nm
- Feature density
- 0.0771 / sq nm
Chart Statistics
11 largest layers shown
- Average features per layer
- 1.6
- Smallest layer
- 1
- Largest layer
- 5
- Area sq km
- 801
- Features per sq km
- 0.02247
- RECTRC 5
- M_COVR Coverage 2
- MAGVAR Magnetic variation 2
- SEAARE Sea area 2
- DEPARE Depth area 1
- M_NPUB 1
- M_NSYS 1
- M_QUAL Data quality 1
- RDOCAL 1
- RESARE 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/US4MI1HL.zip
- S-57 cell https://charts.openships.ai/noaa/s57/approach/US4MI1HL/2.0/US4MI1HL.000
- GeoJSON https://charts.openships.ai/noaa/s57/approach/US4MI1HL/2.0/US4MI1HL.geojson
- GeoParquet https://charts.openships.ai/noaa/s57/approach/US4MI1HL/2.0/US4MI1HL.parquet
- Metadata JSON https://charts.openships.ai/noaa/s57/approach/US4MI1HL/2.0/metadata.json
Editions
| Edition | Published | Metadata |
|---|---|---|
| 2.0 | Aug 14, 2024 | metadata.json |