NOAA S-57 chart cell
South Pacific Ocean - West Coast of Tutuila Island, American Samoa
US4AS1LG
- Usage band
- Approach · code 4
- Current edition
- 1.0
- Features
- 382
- S-57 layers
- 32
- Published
- Dec 4, 2025
- Manifest updated
- Jun 22, 2026, 2:51 PM UTC
Coverage
- North
- 14.10000° S
- South
- 14.40000° S
- West
- 171.00000° W
- East
- 170.70000° W
- Center
- 14.25000° S, 170.85000° W
- Bounds area
- 314 sq nm
- Feature density
- 1.2148 / sq nm
Chart Statistics
20 largest layers shown
- Average features per layer
- 11.9
- Smallest layer
- 1
- Largest layer
- 79
- Area sq km
- 1,079
- Features per sq km
- 0.35418
- DEPCNT Depth contour 79
- DEPARE Depth area 67
- LNDARE Land area 39
- RIVERS River 28
- BUAARE 27
- LNDRGN Land region 26
- SBDARE Seabed area 25
- COALNE Coastline 15
- SEAARE Sea area 12
- M_QUAL Data quality 11
- LNDMRK 7
- LIGHTS Light 6
- SLCONS Shoreline construction 5
- SOUNDG Sounding 5
- CBLSUB 4
- LNDELV 3
- ADMARE 2
- BOYSPP Special purpose buoy 2
- BRIDGE 2
- CTNARE Caution area 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/US4AS1LG.zip
- S-57 cell https://charts.openships.ai/noaa/s57/approach/US4AS1LG/1.0/US4AS1LG.000
- GeoJSON https://charts.openships.ai/noaa/s57/approach/US4AS1LG/1.0/US4AS1LG.geojson
- GeoParquet https://charts.openships.ai/noaa/s57/approach/US4AS1LG/1.0/US4AS1LG.parquet
- Metadata JSON https://charts.openships.ai/noaa/s57/approach/US4AS1LG/1.0/metadata.json
Editions
| Edition | Published | Metadata |
|---|---|---|
| 1.0 | Dec 4, 2025 | metadata.json |