NOAA S-57 chart cell
Perenosa Bay, Seal Bay, Tonki Bay, and Marmot Strait
US4AK4LG
- Usage band
- Approach · code 4
- Current edition
- 1.0
- Features
- 2,995
- S-57 layers
- 30
- Published
- Jul 1, 2025
- Manifest updated
- Jun 22, 2026, 2:51 PM UTC
Coverage
- North
- 58.50000° N
- South
- 58.20000° N
- West
- 152.40000° W
- East
- 151.80000° W
- Center
- 58.35000° N, 152.10000° W
- Bounds area
- 340 sq nm
- Feature density
- 8.7963 / sq nm
Chart Statistics
20 largest layers shown
- Average features per layer
- 99.8
- Smallest layer
- 1
- Largest layer
- 726
- Area sq km
- 1,168
- Features per sq km
- 2.56459
- DEPCNT Depth contour 726
- DEPARE Depth area 686
- COALNE Coastline 386
- LNDARE Land area 378
- SBDARE Seabed area 250
- UWTROC Underwater rock 209
- WEDKLP 151
- RIVERS River 64
- LNDELV 60
- OBSTRN Obstruction 21
- SEAARE Sea area 13
- LAKARE 8
- M_QUAL Data quality 6
- SOUNDG Sounding 6
- LNDRGN Land region 5
- WATTUR 5
- MAGVAR Magnetic variation 3
- SNDWAV 3
- MORFAC 2
- TESARE 2
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/US4AK4LG.zip
- S-57 cell https://charts.openships.ai/noaa/s57/approach/US4AK4LG/1.0/US4AK4LG.000
- GeoJSON https://charts.openships.ai/noaa/s57/approach/US4AK4LG/1.0/US4AK4LG.geojson
- GeoParquet https://charts.openships.ai/noaa/s57/approach/US4AK4LG/1.0/US4AK4LG.parquet
- Metadata JSON https://charts.openships.ai/noaa/s57/approach/US4AK4LG/1.0/metadata.json
Editions
| Edition | Published | Metadata |
|---|---|---|
| 1.0 | Jul 1, 2025 | metadata.json |