NOAA S-57 chart cell
Federated States of Micronesia - Approaches to Yap Islands East
US4TB4Y0
- Usage band
- Approach · code 4
- Current edition
- 1.0
- Features
- 1,312
- S-57 layers
- 38
- Published
- Oct 2, 2025
- Manifest updated
- Jun 22, 2026, 2:51 PM UTC
Coverage
- North
- 10.00000° N
- South
- 9.00000° N
- West
- 138.00000° E
- East
- 139.00000° E
- Center
- 9.50000° N, 138.50000° E
- Bounds area
- 3,555 sq nm
- Feature density
- 0.369 / sq nm
Chart Statistics
20 largest layers shown
- Average features per layer
- 34.5
- Smallest layer
- 1
- Largest layer
- 225
- Area sq km
- 12,195
- Features per sq km
- 0.10759
- LNDARE Land area 225
- BUISGL 205
- ROADWY 125
- COALNE Coastline 124
- SBDARE Seabed area 116
- DEPCNT Depth contour 96
- DEPARE Depth area 83
- VEGATN 68
- LNDRGN Land region 58
- SLCONS Shoreline construction 42
- OBSTRN Obstruction 26
- FSHFAC 24
- M_QUAL Data quality 24
- ADMARE 15
- RIVERS River 13
- LNDELV 12
- UWTROC Underwater rock 8
- SEAARE Sea area 7
- BRIDGE 6
- UNSARE 6
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/US4TB4Y0.zip
- S-57 cell https://charts.openships.ai/noaa/s57/approach/US4TB4Y0/1.0/US4TB4Y0.000
- GeoJSON https://charts.openships.ai/noaa/s57/approach/US4TB4Y0/1.0/US4TB4Y0.geojson
- GeoParquet https://charts.openships.ai/noaa/s57/approach/US4TB4Y0/1.0/US4TB4Y0.parquet
- Metadata JSON https://charts.openships.ai/noaa/s57/approach/US4TB4Y0/1.0/metadata.json
Editions
| Edition | Published | Metadata |
|---|---|---|
| 1.0 | Oct 2, 2025 | metadata.json |