NOAA S-57 chart cell
Attu Island - Massacre Bay
US5A2KHG
- Usage band
- Harbor · code 5
- Current edition
- 1.0
- Features
- 666
- S-57 layers
- 26
- Published
- Jul 22, 2025
- Manifest updated
- Jun 22, 2026, 2:51 PM UTC
Coverage
- North
- 52.80000° N
- South
- 52.72500° N
- West
- 173.10000° E
- East
- 173.25000° E
- Center
- 52.76250° N, 173.17500° E
- Bounds area
- 25 sq nm
- Feature density
- 27.1388 / sq nm
Chart Statistics
20 largest layers shown
- Average features per layer
- 25.6
- Smallest layer
- 1
- Largest layer
- 181
- Area sq km
- 84
- Features per sq km
- 7.91241
- DEPCNT Depth contour 181
- DEPARE Depth area 180
- UWTROC Underwater rock 74
- SBDARE Seabed area 47
- WEDKLP 45
- COALNE Coastline 44
- LNDARE Land area 44
- RIVERS River 8
- OBSTRN Obstruction 6
- SOUNDG Sounding 6
- LAKARE 4
- LNDRGN Land region 4
- M_QUAL Data quality 3
- SEAARE Sea area 3
- WATTUR 3
- LNDELV 2
- MAGVAR Magnetic variation 2
- SWPARE 2
- ADMARE 1
- CTNARE Caution area 1
Nearby Chart Cells
Harbor 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/US5A2KHG.zip
- S-57 cell https://charts.openships.ai/noaa/s57/harbor/US5A2KHG/1.0/US5A2KHG.000
- GeoJSON https://charts.openships.ai/noaa/s57/harbor/US5A2KHG/1.0/US5A2KHG.geojson
- GeoParquet https://charts.openships.ai/noaa/s57/harbor/US5A2KHG/1.0/US5A2KHG.parquet
- Metadata JSON https://charts.openships.ai/noaa/s57/harbor/US5A2KHG/1.0/metadata.json
Editions
| Edition | Published | Metadata |
|---|---|---|
| 1.0 | Jul 22, 2025 | metadata.json |