NOAA S-57 chart cell
Attu Island - Massacre Bay
US5A2KIH
- Usage band
- Harbor · code 5
- Current edition
- 1.0
- Features
- 703
- S-57 layers
- 24
- Published
- Jul 22, 2025
- Manifest updated
- Jun 22, 2026, 2:51 PM UTC
Coverage
- North
- 52.87500° N
- South
- 52.80000° N
- West
- 173.25000° E
- East
- 173.40000° E
- Center
- 52.83750° N, 173.32500° E
- Bounds area
- 24 sq nm
- Feature density
- 28.696 / sq nm
Chart Statistics
20 largest layers shown
- Average features per layer
- 29.3
- Smallest layer
- 1
- Largest layer
- 194
- Area sq km
- 84
- Features per sq km
- 8.36641
- DEPCNT Depth contour 194
- DEPARE Depth area 183
- UWTROC Underwater rock 80
- SBDARE Seabed area 79
- COALNE Coastline 32
- WEDKLP 32
- LNDARE Land area 30
- RIVERS River 16
- LNDRGN Land region 13
- SEAARE Sea area 10
- M_QUAL Data quality 5
- SOUNDG Sounding 5
- LNDELV 4
- LNDMRK 4
- CTNARE Caution area 3
- OBSTRN Obstruction 3
- SWPARE 3
- CBLARE 1
- M_COVR Coverage 1
- M_NPUB 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/US5A2KIH.zip
- S-57 cell https://charts.openships.ai/noaa/s57/harbor/US5A2KIH/1.0/US5A2KIH.000
- GeoJSON https://charts.openships.ai/noaa/s57/harbor/US5A2KIH/1.0/US5A2KIH.geojson
- GeoParquet https://charts.openships.ai/noaa/s57/harbor/US5A2KIH/1.0/US5A2KIH.parquet
- Metadata JSON https://charts.openships.ai/noaa/s57/harbor/US5A2KIH/1.0/metadata.json
Editions
| Edition | Published | Metadata |
|---|---|---|
| 1.0 | Jul 22, 2025 | metadata.json |