NOAA S-57 chart cell
Lake Michigan - Union Pier to Bridgman, MI
US4MI2AN
- Usage band
- Approach · code 4
- Current edition
- 1.1
- Features
- 85
- S-57 layers
- 27
- Published
- Jul 18, 2025
- Manifest updated
- Jun 22, 2026, 2:51 PM UTC
Coverage
- North
- 42.00000° N
- South
- 41.70000° N
- West
- 86.70000° W
- East
- 86.40000° W
- Center
- 41.85000° N, 86.55000° W
- Bounds area
- 242 sq nm
- Feature density
- 0.3517 / sq nm
Chart Statistics
20 largest layers shown
- Average features per layer
- 3.1
- Smallest layer
- 1
- Largest layer
- 10
- Area sq km
- 829
- Features per sq km
- 0.10254
- BUISGL 10
- SLOTOP 10
- DEPARE Depth area 7
- LIGHTS Light 7
- DEPCNT Depth contour 6
- BOYSPP Special purpose buoy 5
- BUAARE 5
- LNDMRK 5
- LNDARE Land area 4
- SLOGRD 4
- OBSTRN Obstruction 2
- PIPSOL 2
- RESARE 2
- SBDARE Seabed area 2
- SLCONS Shoreline construction 2
- COALNE Coastline 1
- LNDRGN Land region 1
- M_COVR Coverage 1
- M_NPUB 1
- M_NSYS 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/US4MI2AN.zip
- S-57 base cell https://charts.openships.ai/noaa/s57/approach/US4MI2AN/1.1/US4MI2AN.000
- S-57 update 001 https://charts.openships.ai/noaa/s57/approach/US4MI2AN/1.1/US4MI2AN.001
- GeoJSON https://charts.openships.ai/noaa/s57/approach/US4MI2AN/1.1/US4MI2AN.geojson
- GeoParquet https://charts.openships.ai/noaa/s57/approach/US4MI2AN/1.1/US4MI2AN.parquet
- Metadata JSON https://charts.openships.ai/noaa/s57/approach/US4MI2AN/1.1/metadata.json
Editions
| Edition | Published | Metadata |
|---|---|---|
| 1.1 | Jul 18, 2025 | metadata.json |