NOAA S-57 chart cell
Burt Lake, Crooked Lake, Pickerel Lake, Round Lake, MI
US4MI1MD
- Usage band
- Approach · code 4
- Current edition
- 1.1
- Features
- 240
- S-57 layers
- 20
- Published
- Sep 12, 2024
- Manifest updated
- Jun 22, 2026, 2:51 PM UTC
Coverage
- North
- 45.60000° N
- South
- 45.30000° N
- West
- 84.90000° W
- East
- 84.60000° W
- Center
- 45.45000° N, 84.75000° W
- Bounds area
- 228 sq nm
- Feature density
- 1.0545 / sq nm
Chart Statistics
20 largest layers shown
- Average features per layer
- 12
- Smallest layer
- 1
- Largest layer
- 73
- Area sq km
- 781
- Features per sq km
- 0.30743
- COALNE Coastline 73
- SLCONS Shoreline construction 51
- LNDRGN Land region 40
- RIVERS River 23
- SEAARE Sea area 7
- BUAARE 5
- CTNARE Caution area 5
- DEPARE Depth area 5
- M_QUAL Data quality 5
- RESARE 5
- LNDMRK 4
- MAGVAR Magnetic variation 4
- LIGHTS Light 3
- BRIDGE 2
- LAKARE 2
- LNDARE Land area 2
- CBLOHD 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/US4MI1MD.zip
- S-57 base cell https://charts.openships.ai/noaa/s57/approach/US4MI1MD/1.1/US4MI1MD.000
- S-57 update 001 https://charts.openships.ai/noaa/s57/approach/US4MI1MD/1.1/US4MI1MD.001
- GeoJSON https://charts.openships.ai/noaa/s57/approach/US4MI1MD/1.1/US4MI1MD.geojson
- GeoParquet https://charts.openships.ai/noaa/s57/approach/US4MI1MD/1.1/US4MI1MD.parquet
- Metadata JSON https://charts.openships.ai/noaa/s57/approach/US4MI1MD/1.1/metadata.json
Editions
| Edition | Published | Metadata |
|---|---|---|
| 1.1 | Sep 12, 2024 | metadata.json |