NOAA S-57 chart cell
Federated States of Micronesia - Approaches to Yap Islands West
US4TB4X0
- Usage band
- Approach · code 4
- Current edition
- 1.0
- Features
- 12
- S-57 layers
- 9
- Published
- Oct 2, 2025
- Manifest updated
- Jun 22, 2026, 2:51 PM UTC
Coverage
- North
- 10.00000° N
- South
- 9.00000° N
- West
- 137.00000° E
- East
- 138.00000° E
- Center
- 9.50000° N, 137.50000° E
- Bounds area
- 3,555 sq nm
- Feature density
- 0.0034 / sq nm
Chart Statistics
9 largest layers shown
- Average features per layer
- 1.3
- Smallest layer
- 1
- Largest layer
- 2
- Area sq km
- 12,195
- Features per sq km
- 0.00098
- M_COVR Coverage 2
- MAGVAR Magnetic variation 2
- SEAARE Sea area 2
- DEPARE Depth area 1
- M_NPUB 1
- M_NSYS 1
- M_QUAL Data quality 1
- SBDARE Seabed area 1
- SOUNDG Sounding 1
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/US4TB4X0.zip
- S-57 cell https://charts.openships.ai/noaa/s57/approach/US4TB4X0/1.0/US4TB4X0.000
- GeoJSON https://charts.openships.ai/noaa/s57/approach/US4TB4X0/1.0/US4TB4X0.geojson
- GeoParquet https://charts.openships.ai/noaa/s57/approach/US4TB4X0/1.0/US4TB4X0.parquet
- Metadata JSON https://charts.openships.ai/noaa/s57/approach/US4TB4X0/1.0/metadata.json
Editions
| Edition | Published | Metadata |
|---|---|---|
| 1.0 | Oct 2, 2025 | metadata.json |