NOAA S-57 chart cell
Lake Huron - Straits of Mackinac to Cheboygan River, MI
US4MI1NE
- Usage band
- Approach · code 4
- Current edition
- 1.1
- Features
- 652
- S-57 layers
- 49
- Published
- Dec 11, 2025
- Manifest updated
- Jun 22, 2026, 2:51 PM UTC
Coverage
- North
- 45.90000° N
- South
- 45.60000° N
- West
- 84.60000° W
- East
- 84.30000° W
- Center
- 45.75000° N, 84.45000° W
- Bounds area
- 226 sq nm
- Feature density
- 2.88 / sq nm
Chart Statistics
20 largest layers shown
- Average features per layer
- 13.3
- Smallest layer
- 1
- Largest layer
- 125
- Area sq km
- 776
- Features per sq km
- 0.83967
- DEPCNT Depth contour 125
- DEPARE Depth area 118
- OBSTRN Obstruction 70
- UWTROC Underwater rock 34
- M_QUAL Data quality 32
- SBDARE Seabed area 26
- SLCONS Shoreline construction 21
- LNDRGN Land region 18
- LIGHTS Light 17
- COALNE Coastline 15
- RECTRC 15
- PILPNT 14
- BOYLAT Lateral buoy 13
- CBLOHD 12
- RIVERS River 12
- SEAARE Sea area 11
- LNDARE Land area 9
- LNDMRK 9
- SOUNDG Sounding 9
- SNDWAV 8
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/US4MI1NE.zip
- S-57 base cell https://charts.openships.ai/noaa/s57/approach/US4MI1NE/1.1/US4MI1NE.000
- S-57 update 001 https://charts.openships.ai/noaa/s57/approach/US4MI1NE/1.1/US4MI1NE.001
- GeoJSON https://charts.openships.ai/noaa/s57/approach/US4MI1NE/1.1/US4MI1NE.geojson
- GeoParquet https://charts.openships.ai/noaa/s57/approach/US4MI1NE/1.1/US4MI1NE.parquet
- Metadata JSON https://charts.openships.ai/noaa/s57/approach/US4MI1NE/1.1/metadata.json
Editions
| Edition | Published | Metadata |
|---|---|---|
| 1.1 | Dec 11, 2025 | metadata.json |