NOAA S-57 chart cell
Ugak Bay and Kiliuda Bay, AK
US4AK4IF
- Usage band
- Approach · code 4
- Current edition
- 1.0
- Features
- 1,570
- S-57 layers
- 28
- Published
- Aug 1, 2025
- Manifest updated
- Jun 22, 2026, 2:51 PM UTC
Coverage
- North
- 57.60000° N
- South
- 57.30000° N
- West
- 153.00000° W
- East
- 152.40000° W
- Center
- 57.45000° N, 152.70000° W
- Bounds area
- 349 sq nm
- Feature density
- 4.497 / sq nm
Chart Statistics
20 largest layers shown
- Average features per layer
- 56.1
- Smallest layer
- 1
- Largest layer
- 425
- Area sq km
- 1,197
- Features per sq km
- 1.31113
- UWTROC Underwater rock 425
- DEPARE Depth area 159
- SBDARE Seabed area 158
- DEPCNT Depth contour 157
- COALNE Coastline 136
- LNDARE Land area 123
- LNDELV 123
- RIVERS River 100
- WEDKLP 78
- SLOGRD 23
- OBSTRN Obstruction 17
- LAKARE 13
- SEAARE Sea area 13
- M_QUAL Data quality 8
- SLOTOP 8
- LNDRGN Land region 7
- SOUNDG Sounding 5
- CTNARE Caution area 4
- MAGVAR Magnetic variation 3
- SLCONS Shoreline construction 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/US4AK4IF.zip
- S-57 cell https://charts.openships.ai/noaa/s57/approach/US4AK4IF/1.0/US4AK4IF.000
- GeoJSON https://charts.openships.ai/noaa/s57/approach/US4AK4IF/1.0/US4AK4IF.geojson
- GeoParquet https://charts.openships.ai/noaa/s57/approach/US4AK4IF/1.0/US4AK4IF.parquet
- Metadata JSON https://charts.openships.ai/noaa/s57/approach/US4AK4IF/1.0/metadata.json
Editions
| Edition | Published | Metadata |
|---|---|---|
| 1.0 | Aug 1, 2025 | metadata.json |