NOAA S-57 chart cell
Nunivak Island, Alaska
US4AK6DL
- Usage band
- Approach · code 4
- Current edition
- 1.1
- Features
- 25
- S-57 layers
- 15
- Published
- May 13, 2025
- Manifest updated
- Jun 22, 2026, 2:51 PM UTC
Coverage
- North
- 60.60000° N
- South
- 60.30000° N
- West
- 167.40000° W
- East
- 166.80000° W
- Center
- 60.45000° N, 167.10000° W
- Bounds area
- 320 sq nm
- Feature density
- 0.0781 / sq nm
Chart Statistics
15 largest layers shown
- Average features per layer
- 1.7
- Smallest layer
- 1
- Largest layer
- 4
- Area sq km
- 1,098
- Features per sq km
- 0.02278
- SBDARE Seabed area 4
- M_QUAL Data quality 3
- SOUNDG Sounding 3
- DEPARE Depth area 2
- M_NPUB 2
- MAGVAR Magnetic variation 2
- ADMARE 1
- CONZNE 1
- DEPCNT Depth contour 1
- EXEZNE 1
- M_COVR Coverage 1
- M_NSYS 1
- RESARE 1
- SEAARE Sea area 1
- TESARE 1
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/US4AK6DL.zip
- S-57 base cell https://charts.openships.ai/noaa/s57/approach/US4AK6DL/1.1/US4AK6DL.000
- S-57 update 001 https://charts.openships.ai/noaa/s57/approach/US4AK6DL/1.1/US4AK6DL.001
- GeoJSON https://charts.openships.ai/noaa/s57/approach/US4AK6DL/1.1/US4AK6DL.geojson
- GeoParquet https://charts.openships.ai/noaa/s57/approach/US4AK6DL/1.1/US4AK6DL.parquet
- Metadata JSON https://charts.openships.ai/noaa/s57/approach/US4AK6DL/1.1/metadata.json
Editions
| Edition | Published | Metadata |
|---|---|---|
| 1.1 | May 13, 2025 | metadata.json |