NOAA S-57 chart cell
Lake Superior, Lake Michigan, and Lake Huron - Saint Marys River
US2GRLBC
- Usage band
- General · code 2
- Current edition
- 1.0
- Features
- 3,520
- S-57 layers
- 62
- Published
- May 7, 2026
- Manifest updated
- Jun 22, 2026, 2:51 PM UTC
Coverage
- North
- 48.00000° N
- South
- 43.20000° N
- West
- 86.40000° W
- East
- 81.18800° W
- Center
- 45.60000° N, 83.79400° W
- Bounds area
- 63,081 sq nm
- Feature density
- 0.0558 / sq nm
Chart Statistics
20 largest layers shown
- Average features per layer
- 56.8
- Smallest layer
- 1
- Largest layer
- 362
- Area sq km
- 216,361
- Features per sq km
- 0.01627
- LNDARE Land area 362
- UWTROC Underwater rock 317
- DEPCNT Depth contour 305
- DEPARE Depth area 290
- COALNE Coastline 272
- LIGHTS Light 235
- RIVERS River 203
- RECTRC 161
- SBDARE Seabed area 159
- BUAARE 157
- LNDMRK 117
- BOYLAT Lateral buoy 116
- SEAARE Sea area 101
- WRECKS Wreck 92
- LNDRGN Land region 84
- OBSTRN Obstruction 67
- BCNSPP Special purpose beacon 58
- DAYMAR 52
- FOGSIG 44
- BCNLAT Lateral beacon 34
Nearby Chart Cells
General 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/US2GRLBC.zip
- S-57 cell https://charts.openships.ai/noaa/s57/general/US2GRLBC/1.0/US2GRLBC.000
- GeoJSON https://charts.openships.ai/noaa/s57/general/US2GRLBC/1.0/US2GRLBC.geojson
- GeoParquet https://charts.openships.ai/noaa/s57/general/US2GRLBC/1.0/US2GRLBC.parquet
- Metadata JSON https://charts.openships.ai/noaa/s57/general/US2GRLBC/1.0/metadata.json
Editions
| Edition | Published | Metadata |
|---|---|---|
| 1.0 | May 7, 2026 | metadata.json |