NOAA S-57 chart cell
Lake Huron - South of Manitoulin Island, Canada
US4MI1MK
- Usage band
- Approach · code 4
- Current edition
- 2.0
- Features
- 17
- S-57 layers
- 11
- Published
- Aug 14, 2024
- Manifest updated
- Jun 22, 2026, 2:51 PM UTC
Coverage
- North
- 45.60000° N
- South
- 45.30000° N
- West
- 82.80000° W
- East
- 82.50000° W
- Center
- 45.45000° N, 82.65000° W
- Bounds area
- 228 sq nm
- Feature density
- 0.0747 / sq nm
Chart Statistics
11 largest layers shown
- Average features per layer
- 1.5
- Smallest layer
- 1
- Largest layer
- 4
- Area sq km
- 781
- Features per sq km
- 0.02178
- SOUNDG Sounding 4
- 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
- OBSTRN Obstruction 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/US4MI1MK.zip
- S-57 cell https://charts.openships.ai/noaa/s57/approach/US4MI1MK/2.0/US4MI1MK.000
- GeoJSON https://charts.openships.ai/noaa/s57/approach/US4MI1MK/2.0/US4MI1MK.geojson
- GeoParquet https://charts.openships.ai/noaa/s57/approach/US4MI1MK/2.0/US4MI1MK.parquet
- Metadata JSON https://charts.openships.ai/noaa/s57/approach/US4MI1MK/2.0/metadata.json
Editions
| Edition | Published | Metadata |
|---|---|---|
| 2.0 | Aug 14, 2024 | metadata.json |