NOAA S-57 chart cell
Lake Mead - Salt Spring Bay, AZ
US4NV1FT
- Usage band
- Approach · code 4
- Current edition
- 1.0
- Features
- 14
- S-57 layers
- 10
- Published
- Dec 19, 2025
- Manifest updated
- Jun 22, 2026, 2:51 PM UTC
Coverage
- North
- 36.00000° N
- South
- 35.70000° N
- West
- 114.30000° W
- East
- 114.00000° W
- Center
- 35.85000° N, 114.15000° W
- Bounds area
- 263 sq nm
- Feature density
- 0.0532 / sq nm
Chart Statistics
10 largest layers shown
- Average features per layer
- 1.4
- Smallest layer
- 1
- Largest layer
- 3
- Area sq km
- 902
- Features per sq km
- 0.01552
- COALNE Coastline 3
- LNDRGN Land region 3
- DEPARE Depth area 1
- LNDARE Land area 1
- M_COVR Coverage 1
- M_NPUB 1
- M_NSYS 1
- M_QUAL Data quality 1
- MAGVAR Magnetic variation 1
- SEAARE Sea area 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/US4NV1FT.zip
- S-57 cell https://charts.openships.ai/noaa/s57/approach/US4NV1FT/1.0/US4NV1FT.000
- GeoJSON https://charts.openships.ai/noaa/s57/approach/US4NV1FT/1.0/US4NV1FT.geojson
- GeoParquet https://charts.openships.ai/noaa/s57/approach/US4NV1FT/1.0/US4NV1FT.parquet
- Metadata JSON https://charts.openships.ai/noaa/s57/approach/US4NV1FT/1.0/metadata.json
Editions
| Edition | Published | Metadata |
|---|---|---|
| 1.0 | Dec 19, 2025 | metadata.json |