NOAA S-57 chart cell
Unimak Pass and Vicinity
US4AK3IK
- Usage band
- Approach · code 4
- Current edition
- 1.0
- Features
- 2,986
- S-57 layers
- 36
- Published
- Aug 7, 2024
- Manifest updated
- Jun 22, 2026, 2:51 PM UTC
Coverage
- North
- 54.30000° N
- South
- 54.00000° N
- West
- 165.60000° W
- East
- 165.00000° W
- Center
- 54.15000° N, 165.30000° W
- Bounds area
- 380 sq nm
- Feature density
- 7.8574 / sq nm
Chart Statistics
20 largest layers shown
- Average features per layer
- 82.9
- Smallest layer
- 1
- Largest layer
- 592
- Area sq km
- 1,303
- Features per sq km
- 2.29085
- UWTROC Underwater rock 592
- DEPARE Depth area 421
- LNDARE Land area 419
- DEPCNT Depth contour 418
- SBDARE Seabed area 308
- WEDKLP 247
- COALNE Coastline 204
- LNDELV 77
- RIVERS River 74
- OBSTRN Obstruction 56
- SLOTOP 47
- M_QUAL Data quality 25
- SEAARE Sea area 25
- WATTUR 15
- SNDWAV 12
- LAKARE 8
- LNDRGN Land region 8
- SOUNDG Sounding 4
- ACHARE Anchorage area 3
- ADMARE 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/US4AK3IK.zip
- S-57 cell https://charts.openships.ai/noaa/s57/approach/US4AK3IK/1.0/US4AK3IK.000
- GeoJSON https://charts.openships.ai/noaa/s57/approach/US4AK3IK/1.0/US4AK3IK.geojson
- GeoParquet https://charts.openships.ai/noaa/s57/approach/US4AK3IK/1.0/US4AK3IK.parquet
- Metadata JSON https://charts.openships.ai/noaa/s57/approach/US4AK3IK/1.0/metadata.json
Editions
| Edition | Published | Metadata |
|---|---|---|
| 1.0 | Aug 7, 2024 | metadata.json |