NOAA S-57 chart cell
Lake Michigan - Garden Peninsula - Nahma to Parent Bay, MI
US4MI2NN
- Usage band
- Approach · code 4
- Current edition
- 2.0
- Features
- 642
- S-57 layers
- 35
- Published
- Sep 17, 2025
- Manifest updated
- Jun 22, 2026, 2:51 PM UTC
Coverage
- North
- 45.90000° N
- South
- 45.60000° N
- West
- 86.70000° W
- East
- 86.40000° W
- Center
- 45.75000° N, 86.55000° W
- Bounds area
- 226 sq nm
- Feature density
- 2.8358 / sq nm
Chart Statistics
20 largest layers shown
- Average features per layer
- 18.3
- Smallest layer
- 1
- Largest layer
- 110
- Area sq km
- 776
- Features per sq km
- 0.82679
- DEPARE Depth area 110
- UWTROC Underwater rock 106
- DEPCNT Depth contour 105
- COALNE Coastline 72
- LNDRGN Land region 37
- OBSTRN Obstruction 37
- FSHFAC 27
- LNDARE Land area 23
- SEAARE Sea area 20
- SBDARE Seabed area 14
- SLCONS Shoreline construction 13
- BUISGL 11
- RIVERS River 11
- SLOTOP 11
- M_QUAL Data quality 9
- BUAARE 5
- PILPNT 5
- RESARE 5
- WEDKLP 3
- LNDMRK 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/US4MI2NN.zip
- S-57 cell https://charts.openships.ai/noaa/s57/approach/US4MI2NN/2.0/US4MI2NN.000
- GeoJSON https://charts.openships.ai/noaa/s57/approach/US4MI2NN/2.0/US4MI2NN.geojson
- GeoParquet https://charts.openships.ai/noaa/s57/approach/US4MI2NN/2.0/US4MI2NN.parquet
- Metadata JSON https://charts.openships.ai/noaa/s57/approach/US4MI2NN/2.0/metadata.json
Editions
| Edition | Published | Metadata |
|---|---|---|
| 2.0 | Sep 17, 2025 | metadata.json |