NOAA S-57 chart cell
Main Hawaiian Islands - Island of Niihau - Kawaihoa to Kuakamoku Rock, HI
US4HI1OC
- Usage band
- Approach · code 4
- Current edition
- 1.0
- Features
- 129
- S-57 layers
- 23
- Published
- Aug 12, 2025
- Manifest updated
- Jun 22, 2026, 2:51 PM UTC
Coverage
- North
- 21.90000° N
- South
- 21.60000° N
- West
- 160.50000° W
- East
- 160.20000° W
- Center
- 21.75000° N, 160.35000° W
- Bounds area
- 301 sq nm
- Feature density
- 0.4281 / sq nm
Chart Statistics
20 largest layers shown
- Average features per layer
- 5.6
- Smallest layer
- 1
- Largest layer
- 34
- Area sq km
- 1,034
- Features per sq km
- 0.12481
- SBDARE Seabed area 34
- DEPCNT Depth contour 14
- COALNE Coastline 13
- UWTROC Underwater rock 13
- DEPARE Depth area 12
- LNDARE Land area 12
- BUISGL 5
- LNDRGN Land region 3
- ADMARE 2
- BUAARE 2
- CONZNE 2
- EXEZNE 2
- LNDELV 2
- M_QUAL Data quality 2
- SOUNDG Sounding 2
- TESARE 2
- M_COVR Coverage 1
- M_NPUB 1
- M_NSYS 1
- MAGVAR Magnetic variation 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/US4HI1OC.zip
- S-57 cell https://charts.openships.ai/noaa/s57/approach/US4HI1OC/1.0/US4HI1OC.000
- GeoJSON https://charts.openships.ai/noaa/s57/approach/US4HI1OC/1.0/US4HI1OC.geojson
- GeoParquet https://charts.openships.ai/noaa/s57/approach/US4HI1OC/1.0/US4HI1OC.parquet
- Metadata JSON https://charts.openships.ai/noaa/s57/approach/US4HI1OC/1.0/metadata.json
Editions
| Edition | Published | Metadata |
|---|---|---|
| 1.0 | Aug 12, 2025 | metadata.json |