NOAA S-57 chart cell
Near Islands, AK
US4AK1FO
- Usage band
- Approach · code 4
- Current edition
- 1.0
- Features
- 2,443
- S-57 layers
- 31
- Published
- Mar 7, 2024
- Manifest updated
- Jun 22, 2026, 2:51 PM UTC
Coverage
- North
- 52.80000° N
- South
- 52.50000° N
- West
- 172.80000° E
- East
- 173.40000° E
- Center
- 52.65000° N, 173.10000° E
- Bounds area
- 394 sq nm
- Feature density
- 6.2058 / sq nm
Chart Statistics
20 largest layers shown
- Average features per layer
- 78.8
- Smallest layer
- 1
- Largest layer
- 604
- Area sq km
- 1,350
- Features per sq km
- 1.80933
- DEPCNT Depth contour 604
- DEPARE Depth area 585
- UWTROC Underwater rock 309
- LNDARE Land area 302
- COALNE Coastline 251
- SBDARE Seabed area 149
- WEDKLP 90
- OBSTRN Obstruction 24
- RIVERS River 24
- LNDRGN Land region 15
- WATTUR 14
- SOUNDG Sounding 11
- LNDELV 9
- SEAARE Sea area 8
- LAKARE 6
- M_QUAL Data quality 6
- MAGVAR Magnetic variation 6
- SLOTOP 6
- SWPARE 6
- LNDMRK 5
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/US4AK1FO.zip
- S-57 cell https://charts.openships.ai/noaa/s57/approach/US4AK1FO/1.0/US4AK1FO.000
- GeoJSON https://charts.openships.ai/noaa/s57/approach/US4AK1FO/1.0/US4AK1FO.geojson
- GeoParquet https://charts.openships.ai/noaa/s57/approach/US4AK1FO/1.0/US4AK1FO.parquet
- Metadata JSON https://charts.openships.ai/noaa/s57/approach/US4AK1FO/1.0/metadata.json
Editions
| Edition | Published | Metadata |
|---|---|---|
| 1.0 | Mar 7, 2024 | metadata.json |