NOAA S-57 chart cell
Saginaw Bay - Whitestone Point to Tawas Bay, MI
US4MI1IH
- Usage band
- Approach · code 4
- Current edition
- 1.1
- Features
- 224
- S-57 layers
- 41
- Published
- Apr 24, 2025
- Manifest updated
- Jun 22, 2026, 2:51 PM UTC
Coverage
- North
- 44.40000° N
- South
- 44.10000° N
- West
- 83.70000° W
- East
- 83.40000° W
- Center
- 44.25000° N, 83.55000° W
- Bounds area
- 232 sq nm
- Feature density
- 0.9639 / sq nm
Chart Statistics
20 largest layers shown
- Average features per layer
- 5.5
- Smallest layer
- 1
- Largest layer
- 27
- Area sq km
- 797
- Features per sq km
- 0.28102
- DEPCNT Depth contour 27
- DEPARE Depth area 24
- SLCONS Shoreline construction 22
- LIGHTS Light 19
- OBSTRN Obstruction 17
- SBDARE Seabed area 11
- LNDARE Land area 10
- M_QUAL Data quality 8
- LNDMRK 7
- BOYLAT Lateral buoy 6
- BUISGL 6
- RIVERS River 6
- SOUNDG Sounding 5
- COALNE Coastline 4
- PILPNT 4
- PIPSOL 4
- RECTRC 4
- BCNLAT Lateral beacon 3
- BCNSPP Special purpose beacon 3
- DAYMAR 3
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/US4MI1IH.zip
- S-57 base cell https://charts.openships.ai/noaa/s57/approach/US4MI1IH/1.1/US4MI1IH.000
- S-57 update 001 https://charts.openships.ai/noaa/s57/approach/US4MI1IH/1.1/US4MI1IH.001
- GeoJSON https://charts.openships.ai/noaa/s57/approach/US4MI1IH/1.1/US4MI1IH.geojson
- GeoParquet https://charts.openships.ai/noaa/s57/approach/US4MI1IH/1.1/US4MI1IH.parquet
- Metadata JSON https://charts.openships.ai/noaa/s57/approach/US4MI1IH/1.1/metadata.json
Editions
| Edition | Published | Metadata |
|---|---|---|
| 1.1 | Apr 24, 2025 | metadata.json |