NOAA S-57 chart cell
Federated States of Micronesia - Approaches to Pohnpei Harbor
US4TD4N0
- Usage band
- Approach · code 4
- Current edition
- 1.0
- Features
- 1,302
- S-57 layers
- 30
- Published
- Sep 3, 2025
- Manifest updated
- Jun 22, 2026, 2:51 PM UTC
Coverage
- North
- 8.00000° N
- South
- 7.00000° N
- West
- 158.00000° E
- East
- 159.00000° E
- Center
- 7.50000° N, 158.50000° E
- Bounds area
- 3,574 sq nm
- Feature density
- 0.3643 / sq nm
Chart Statistics
20 largest layers shown
- Average features per layer
- 43.4
- Smallest layer
- 1
- Largest layer
- 471
- Area sq km
- 12,258
- Features per sq km
- 0.10621
- DEPCNT Depth contour 471
- DEPARE Depth area 406
- SBDARE Seabed area 344
- COALNE Coastline 9
- UWTROC Underwater rock 9
- M_QUAL Data quality 8
- OBSTRN Obstruction 6
- LNDARE Land area 5
- WATTUR 5
- SEAARE Sea area 4
- VEGATN 4
- ADMARE 3
- BCNSPP Special purpose beacon 3
- SOUNDG Sounding 3
- BUISGL 2
- M_COVR Coverage 2
- MORFAC 2
- SLCONS Shoreline construction 2
- TS_FEB 2
- WRECKS Wreck 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/US4TD4N0.zip
- S-57 cell https://charts.openships.ai/noaa/s57/approach/US4TD4N0/1.0/US4TD4N0.000
- GeoJSON https://charts.openships.ai/noaa/s57/approach/US4TD4N0/1.0/US4TD4N0.geojson
- GeoParquet https://charts.openships.ai/noaa/s57/approach/US4TD4N0/1.0/US4TD4N0.parquet
- Metadata JSON https://charts.openships.ai/noaa/s57/approach/US4TD4N0/1.0/metadata.json
Editions
| Edition | Published | Metadata |
|---|---|---|
| 1.0 | Sep 3, 2025 | metadata.json |