NOAA S-57 chart cell
Columbia River Entrance to Portland
US4OR1NF
- Usage band
- Approach · code 4
- Current edition
- 1.1
- Features
- 1,382
- S-57 layers
- 47
- Published
- Nov 26, 2025
- Manifest updated
- Jun 22, 2026, 2:51 PM UTC
Coverage
- North
- 46.20000° N
- South
- 45.90000° N
- West
- 123.67500° W
- East
- 123.30000° W
- Center
- 46.05000° N, 123.48750° W
- Bounds area
- 281 sq nm
- Feature density
- 4.9101 / sq nm
Chart Statistics
20 largest layers shown
- Average features per layer
- 29.4
- Smallest layer
- 1
- Largest layer
- 186
- Area sq km
- 965
- Features per sq km
- 1.43155
- DEPCNT Depth contour 186
- COALNE Coastline 169
- DEPARE Depth area 162
- PILPNT 157
- SLCONS Shoreline construction 143
- LNDARE Land area 105
- LNDRGN Land region 97
- RIVERS River 62
- OBSTRN Obstruction 37
- LIGHTS Light 27
- M_QUAL Data quality 23
- DAYMAR 21
- PONTON 20
- SEAARE Sea area 19
- MORFAC 18
- BCNLAT Lateral beacon 15
- SBDARE Seabed area 15
- DYKCON 13
- BRIDGE 11
- BCNSPP Special purpose beacon 9
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/US4OR1NF.zip
- S-57 base cell https://charts.openships.ai/noaa/s57/approach/US4OR1NF/1.1/US4OR1NF.000
- S-57 update 001 https://charts.openships.ai/noaa/s57/approach/US4OR1NF/1.1/US4OR1NF.001
- GeoJSON https://charts.openships.ai/noaa/s57/approach/US4OR1NF/1.1/US4OR1NF.geojson
- GeoParquet https://charts.openships.ai/noaa/s57/approach/US4OR1NF/1.1/US4OR1NF.parquet
- Metadata JSON https://charts.openships.ai/noaa/s57/approach/US4OR1NF/1.1/metadata.json
Editions
| Edition | Published | Metadata |
|---|---|---|
| 1.1 | Nov 26, 2025 | metadata.json |