NOAA S-57 chart cell
North Pacific Ocean - Northwest of Maro Reef, HI
US4HI3IO
- Usage band
- Approach · code 4
- Current edition
- 1.0
- Features
- 38
- S-57 layers
- 13
- Published
- Aug 15, 2025
- Manifest updated
- Jun 22, 2026, 2:51 PM UTC
Coverage
- North
- 25.80000° N
- South
- 25.50000° N
- West
- 171.00000° W
- East
- 170.70000° W
- Center
- 25.65000° N, 170.85000° W
- Bounds area
- 292 sq nm
- Feature density
- 0.1299 / sq nm
Chart Statistics
13 largest layers shown
- Average features per layer
- 2.9
- Smallest layer
- 1
- Largest layer
- 9
- Area sq km
- 1,003
- Features per sq km
- 0.03788
- DEPARE Depth area 9
- DEPCNT Depth contour 8
- M_QUAL Data quality 5
- RESARE 4
- M_NPUB 2
- MAGVAR Magnetic variation 2
- SOUNDG Sounding 2
- CONZNE 1
- EXEZNE 1
- M_COVR Coverage 1
- M_NSYS 1
- SEAARE Sea area 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/US4HI3IO.zip
- S-57 cell https://charts.openships.ai/noaa/s57/approach/US4HI3IO/1.0/US4HI3IO.000
- GeoJSON https://charts.openships.ai/noaa/s57/approach/US4HI3IO/1.0/US4HI3IO.geojson
- GeoParquet https://charts.openships.ai/noaa/s57/approach/US4HI3IO/1.0/US4HI3IO.parquet
- Metadata JSON https://charts.openships.ai/noaa/s57/approach/US4HI3IO/1.0/metadata.json
Editions
| Edition | Published | Metadata |
|---|---|---|
| 1.0 | Aug 15, 2025 | metadata.json |