NOAA S-57 chart cell
Lake Huron - Hammond Bay, MI
US4MI1MF
- Usage band
- Approach · code 4
- Current edition
- 1.2
- Features
- 196
- S-57 layers
- 25
- Published
- Jan 29, 2026
- Manifest updated
- Jun 22, 2026, 2:51 PM UTC
Coverage
- North
- 45.60000° N
- South
- 45.30000° N
- West
- 84.30000° W
- East
- 84.00000° W
- Center
- 45.45000° N, 84.15000° W
- Bounds area
- 228 sq nm
- Feature density
- 0.8611 / sq nm
Chart Statistics
20 largest layers shown
- Average features per layer
- 7.8
- Smallest layer
- 1
- Largest layer
- 69
- Area sq km
- 781
- Features per sq km
- 0.25107
- OBSTRN Obstruction 69
- DEPARE Depth area 26
- DEPCNT Depth contour 25
- M_QUAL Data quality 14
- RIVERS River 10
- SLCONS Shoreline construction 8
- UWTROC Underwater rock 7
- COALNE Coastline 4
- SBDARE Seabed area 4
- BUAARE 3
- SEAARE Sea area 3
- SOUNDG Sounding 3
- BCNLAT Lateral beacon 2
- DAYMAR 2
- LAKARE 2
- LIGHTS Light 2
- LNDARE Land area 2
- LNDMRK 2
- RESARE 2
- M_COVR Coverage 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/US4MI1MF.zip
- S-57 base cell https://charts.openships.ai/noaa/s57/approach/US4MI1MF/1.2/US4MI1MF.000
- S-57 update 001 https://charts.openships.ai/noaa/s57/approach/US4MI1MF/1.2/US4MI1MF.001
- S-57 update 002 https://charts.openships.ai/noaa/s57/approach/US4MI1MF/1.2/US4MI1MF.002
- GeoJSON https://charts.openships.ai/noaa/s57/approach/US4MI1MF/1.2/US4MI1MF.geojson
- GeoParquet https://charts.openships.ai/noaa/s57/approach/US4MI1MF/1.2/US4MI1MF.parquet
- Metadata JSON https://charts.openships.ai/noaa/s57/approach/US4MI1MF/1.2/metadata.json
Editions
| Edition | Published | Metadata |
|---|---|---|
| 1.2 | Jan 29, 2026 | metadata.json |