NOAA S-57 chart cell
North Pacific Ocean - Alalakelki Channel, HI
US4HI1KQ
- Usage band
- Approach · code 4
- Current edition
- 1.0
- Features
- 665
- S-57 layers
- 31
- Published
- Sep 26, 2025
- Manifest updated
- Jun 22, 2026, 2:51 PM UTC
Coverage
- North
- 20.70000° N
- South
- 20.40000° N
- West
- 156.60000° W
- East
- 156.30000° W
- Center
- 20.55000° N, 156.45000° W
- Bounds area
- 304 sq nm
- Feature density
- 2.189 / sq nm
Chart Statistics
20 largest layers shown
- Average features per layer
- 21.5
- Smallest layer
- 1
- Largest layer
- 111
- Area sq km
- 1,042
- Features per sq km
- 0.63821
- COALNE Coastline 111
- LNDARE Land area 99
- SBDARE Seabed area 92
- DEPCNT Depth contour 81
- UWTROC Underwater rock 81
- DEPARE Depth area 68
- LNDRGN Land region 21
- LNDELV 19
- BUISGL 14
- OBSTRN Obstruction 14
- SLOGRD 12
- SOUNDG Sounding 9
- SEAARE Sea area 8
- CBLSUB 5
- M_QUAL Data quality 4
- RESARE 4
- ACHARE Anchorage area 3
- LIGHTS Light 3
- ADMARE 2
- BCNSPP Special purpose beacon 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/US4HI1KQ.zip
- S-57 cell https://charts.openships.ai/noaa/s57/approach/US4HI1KQ/1.0/US4HI1KQ.000
- GeoJSON https://charts.openships.ai/noaa/s57/approach/US4HI1KQ/1.0/US4HI1KQ.geojson
- GeoParquet https://charts.openships.ai/noaa/s57/approach/US4HI1KQ/1.0/US4HI1KQ.parquet
- Metadata JSON https://charts.openships.ai/noaa/s57/approach/US4HI1KQ/1.0/metadata.json
Editions
| Edition | Published | Metadata |
|---|---|---|
| 1.0 | Sep 26, 2025 | metadata.json |