NOAA S-57 chart cell
Islands of the Pacific Ocean - West of Apra Harbor, Guam
US4GU1HD
- Usage band
- Approach · code 4
- Current edition
- 1.0
- Features
- 43
- S-57 layers
- 19
- Published
- Aug 20, 2025
- Manifest updated
- Jun 22, 2026, 2:51 PM UTC
Coverage
- North
- 13.50000° N
- South
- 13.20000° N
- West
- 144.30000° E
- East
- 144.60000° E
- Center
- 13.35000° N, 144.45000° E
- Bounds area
- 316 sq nm
- Feature density
- 0.1362 / sq nm
Chart Statistics
19 largest layers shown
- Average features per layer
- 2.3
- Smallest layer
- 1
- Largest layer
- 7
- Area sq km
- 1,083
- Features per sq km
- 0.03971
- CBLSUB 7
- M_QUAL Data quality 5
- DEPARE Depth area 4
- SOUNDG Sounding 4
- BOYSPP Special purpose buoy 3
- LIGHTS Light 3
- ADMARE 2
- DEPCNT Depth contour 2
- M_NPUB 2
- SEAARE Sea area 2
- CONZNE 1
- DMPGRD 1
- EXEZNE 1
- M_COVR Coverage 1
- M_NSYS 1
- MAGVAR Magnetic variation 1
- MIPARE 1
- RESARE 1
- TESARE 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/US4GU1HD.zip
- S-57 cell https://charts.openships.ai/noaa/s57/approach/US4GU1HD/1.0/US4GU1HD.000
- GeoJSON https://charts.openships.ai/noaa/s57/approach/US4GU1HD/1.0/US4GU1HD.geojson
- GeoParquet https://charts.openships.ai/noaa/s57/approach/US4GU1HD/1.0/US4GU1HD.parquet
- Metadata JSON https://charts.openships.ai/noaa/s57/approach/US4GU1HD/1.0/metadata.json
Editions
| Edition | Published | Metadata |
|---|---|---|
| 1.0 | Aug 20, 2025 | metadata.json |