NOAA S-57 chart cell
Perry Passage
US4AK4TN
- Usage band
- Approach · code 4
- Current edition
- 2.0
- Features
- 4,227
- S-57 layers
- 32
- Published
- Jul 23, 2025
- Manifest updated
- Jun 22, 2026, 2:51 PM UTC
Coverage
- North
- 60.90000° N
- South
- 60.60000° N
- West
- 148.20000° W
- East
- 147.60000° W
- Center
- 60.75000° N, 147.90000° W
- Bounds area
- 317 sq nm
- Feature density
- 13.3321 / sq nm
Chart Statistics
20 largest layers shown
- Average features per layer
- 132.1
- Smallest layer
- 1
- Largest layer
- 1,874
- Area sq km
- 1,087
- Features per sq km
- 3.88702
- UWTROC Underwater rock 1,874
- LNDARE Land area 558
- DEPCNT Depth contour 530
- DEPARE Depth area 508
- SBDARE Seabed area 282
- COALNE Coastline 218
- RIVERS River 81
- LNDELV 36
- M_QUAL Data quality 31
- SEAARE Sea area 28
- OBSTRN Obstruction 21
- LNDRGN Land region 15
- CBLSUB 8
- SOUNDG Sounding 6
- LIGHTS Light 4
- BCNSPP Special purpose beacon 3
- DAYMAR 3
- LAKARE 3
- MORFAC 3
- CBLARE 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/US4AK4TN.zip
- S-57 cell https://charts.openships.ai/noaa/s57/approach/US4AK4TN/2.0/US4AK4TN.000
- GeoJSON https://charts.openships.ai/noaa/s57/approach/US4AK4TN/2.0/US4AK4TN.geojson
- GeoParquet https://charts.openships.ai/noaa/s57/approach/US4AK4TN/2.0/US4AK4TN.parquet
- Metadata JSON https://charts.openships.ai/noaa/s57/approach/US4AK4TN/2.0/metadata.json
Editions
| Edition | Published | Metadata |
|---|---|---|
| 2.0 | Jul 23, 2025 | metadata.json |