NOAA S-57 chart cell
Federated States of Micronesia - Makur Islands, Unanu and Onou, Piherarh
US4TD3Q0
- Usage band
- Approach · code 4
- Current edition
- 1.0
- Features
- 645
- S-57 layers
- 21
- Published
- Dec 17, 2025
- Manifest updated
- Jun 22, 2026, 2:51 PM UTC
Coverage
- North
- 9.00000° N
- South
- 8.00000° N
- West
- 150.00000° E
- East
- 151.00000° E
- Center
- 8.50000° N, 150.50000° E
- Bounds area
- 3,565 sq nm
- Feature density
- 0.1809 / sq nm
Chart Statistics
20 largest layers shown
- Average features per layer
- 30.7
- Smallest layer
- 1
- Largest layer
- 234
- Area sq km
- 12,228
- Features per sq km
- 0.05275
- SBDARE Seabed area 234
- DEPCNT Depth contour 133
- DEPARE Depth area 122
- UWTROC Underwater rock 56
- LNDARE Land area 21
- ADMARE 12
- COALNE Coastline 12
- M_QUAL Data quality 9
- VEGATN 9
- SEAARE Sea area 6
- SWPARE 5
- M_COVR Coverage 4
- SOUNDG Sounding 4
- BUAARE 3
- CTRPNT 3
- M_NPUB 3
- M_NSYS 3
- MAGVAR Magnetic variation 3
- CTNARE Caution area 1
- OBSTRN Obstruction 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/US4TD3Q0.zip
- S-57 cell https://charts.openships.ai/noaa/s57/approach/US4TD3Q0/1.0/US4TD3Q0.000
- GeoJSON https://charts.openships.ai/noaa/s57/approach/US4TD3Q0/1.0/US4TD3Q0.geojson
- GeoParquet https://charts.openships.ai/noaa/s57/approach/US4TD3Q0/1.0/US4TD3Q0.parquet
- Metadata JSON https://charts.openships.ai/noaa/s57/approach/US4TD3Q0/1.0/metadata.json
Editions
| Edition | Published | Metadata |
|---|---|---|
| 1.0 | Dec 17, 2025 | metadata.json |