NOAA S-57 chart cell
Lake Huron - Wankes Reef, MI
US4MI1GK
- Usage band
- Approach · code 4
- Current edition
- 2.0
- Features
- 353
- S-57 layers
- 26
- Published
- May 20, 2025
- Manifest updated
- Jun 22, 2026, 2:51 PM UTC
Coverage
- North
- 43.80000° N
- South
- 43.50000° N
- West
- 82.80000° W
- East
- 82.50000° W
- Center
- 43.65000° N, 82.65000° W
- Bounds area
- 235 sq nm
- Feature density
- 1.5037 / sq nm
Chart Statistics
20 largest layers shown
- Average features per layer
- 13.6
- Smallest layer
- 1
- Largest layer
- 104
- Area sq km
- 805
- Features per sq km
- 0.43841
- UWTROC Underwater rock 104
- DEPCNT Depth contour 52
- DEPARE Depth area 40
- RIVERS River 36
- OBSTRN Obstruction 25
- SBDARE Seabed area 22
- BUISGL 11
- LNDARE Land area 10
- M_QUAL Data quality 8
- COALNE Coastline 7
- BUAARE 5
- LNDRGN Land region 4
- MAGVAR Magnetic variation 4
- SLCONS Shoreline construction 4
- LNDMRK 3
- SOUNDG Sounding 3
- WRECKS Wreck 3
- RECTRC 2
- SEAARE Sea area 2
- SILTNK 2
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/US4MI1GK.zip
- S-57 cell https://charts.openships.ai/noaa/s57/approach/US4MI1GK/2.0/US4MI1GK.000
- GeoJSON https://charts.openships.ai/noaa/s57/approach/US4MI1GK/2.0/US4MI1GK.geojson
- GeoParquet https://charts.openships.ai/noaa/s57/approach/US4MI1GK/2.0/US4MI1GK.parquet
- Metadata JSON https://charts.openships.ai/noaa/s57/approach/US4MI1GK/2.0/metadata.json
Editions
| Edition | Published | Metadata |
|---|---|---|
| 2.0 | May 20, 2025 | metadata.json |