NOAA S-57 chart cell
Stephens Passage, Chatham Strait, Icy Strait and Lynn Canal
US3AK3AM
- Usage band
- Coastal · code 3
- Current edition
- 21.1
- Features
- 5,577
- S-57 layers
- 58
- Published
- Mar 13, 2026
- Manifest updated
- Jun 22, 2026, 2:51 PM UTC
Coverage
- North
- 59.54696° N
- South
- 57.69990° N
- West
- 136.09554° W
- East
- 133.08850° W
- Center
- 58.62343° N, 134.59202° W
- Bounds area
- 10,424 sq nm
- Feature density
- 0.535 / sq nm
Chart Statistics
20 largest layers shown
- Average features per layer
- 96.2
- Smallest layer
- 1
- Largest layer
- 1,052
- Area sq km
- 35,754
- Features per sq km
- 0.15598
- COALNE Coastline 1,052
- UWTROC Underwater rock 863
- DEPCNT Depth contour 681
- DEPARE Depth area 651
- LNDARE Land area 368
- SLOGRD 365
- SBDARE Seabed area 333
- RIVERS River 308
- LNDELV 235
- SEAARE Sea area 85
- LNDRGN Land region 81
- OBSTRN Obstruction 76
- LIGHTS Light 61
- DAYMAR 50
- BCNSPP Special purpose beacon 35
- M_QUAL Data quality 33
- SLCONS Shoreline construction 33
- WEDKLP 29
- ICEARE 20
- LNDMRK 20
Nearby Chart Cells
Coastal 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/US3AK3AM.zip
- S-57 base cell https://charts.openships.ai/noaa/s57/coastal/US3AK3AM/21.1/US3AK3AM.000
- S-57 update 001 https://charts.openships.ai/noaa/s57/coastal/US3AK3AM/21.1/US3AK3AM.001
- GeoJSON https://charts.openships.ai/noaa/s57/coastal/US3AK3AM/21.1/US3AK3AM.geojson
- GeoParquet https://charts.openships.ai/noaa/s57/coastal/US3AK3AM/21.1/US3AK3AM.parquet
- Metadata JSON https://charts.openships.ai/noaa/s57/coastal/US3AK3AM/21.1/metadata.json
Editions
| Edition | Published | Metadata |
|---|---|---|
| 21.1 | Mar 13, 2026 | metadata.json |