NOAA S-57 chart cell
South Pacific Ocean - East Coast of Tutuila Island, American Samoa
US4AS1LH
- Usage band
- Approach · code 4
- Current edition
- 1.0
- Features
- 524
- S-57 layers
- 42
- Published
- Dec 4, 2025
- Manifest updated
- Jun 22, 2026, 2:51 PM UTC
Coverage
- North
- 14.10000° S
- South
- 14.40000° S
- West
- 170.70000° W
- East
- 170.40000° W
- Center
- 14.25000° S, 170.55000° W
- Bounds area
- 314 sq nm
- Feature density
- 1.6664 / sq nm
Chart Statistics
20 largest layers shown
- Average features per layer
- 12.5
- Smallest layer
- 1
- Largest layer
- 145
- Area sq km
- 1,079
- Features per sq km
- 0.48584
- DEPCNT Depth contour 145
- DEPARE Depth area 128
- SBDARE Seabed area 32
- LNDRGN Land region 28
- LNDARE Land area 26
- BUAARE 25
- M_QUAL Data quality 15
- RIVERS River 15
- COALNE Coastline 13
- SLCONS Shoreline construction 11
- LIGHTS Light 10
- SEAARE Sea area 10
- SOUNDG Sounding 8
- LNDELV 6
- WRECKS Wreck 6
- WATFAL 5
- UWTROC Underwater rock 4
- BCNSPP Special purpose beacon 3
- CBLSUB 3
- DAYMAR 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/US4AS1LH.zip
- S-57 cell https://charts.openships.ai/noaa/s57/approach/US4AS1LH/1.0/US4AS1LH.000
- GeoJSON https://charts.openships.ai/noaa/s57/approach/US4AS1LH/1.0/US4AS1LH.geojson
- GeoParquet https://charts.openships.ai/noaa/s57/approach/US4AS1LH/1.0/US4AS1LH.parquet
- Metadata JSON https://charts.openships.ai/noaa/s57/approach/US4AS1LH/1.0/metadata.json
Editions
| Edition | Published | Metadata |
|---|---|---|
| 1.0 | Dec 4, 2025 | metadata.json |