NOAA S-57 chart cell
Approaches to Brunswick River
US4GA1AH
- Usage band
- Approach · code 4
- Current edition
- 1.0
- Features
- 70
- S-57 layers
- 20
- Published
- Oct 24, 2024
- Manifest updated
- Jun 22, 2026, 2:51 PM UTC
Coverage
- North
- 31.20000° N
- South
- 30.90000° N
- West
- 81.00000° W
- East
- 80.70000° W
- Center
- 31.05000° N, 80.85000° W
- Bounds area
- 278 sq nm
- Feature density
- 0.2518 / sq nm
Chart Statistics
20 largest layers shown
- Average features per layer
- 3.5
- Smallest layer
- 1
- Largest layer
- 13
- Area sq km
- 953
- Features per sq km
- 0.07343
- DEPCNT Depth contour 13
- SBDARE Seabed area 13
- DEPARE Depth area 12
- M_QUAL Data quality 6
- SOUNDG Sounding 5
- MAGVAR Magnetic variation 3
- RESARE 3
- CTNARE Caution area 2
- TWRTPT 2
- CONZNE 1
- EXEZNE 1
- FOGSIG 1
- LNDARE Land area 1
- LNDMRK 1
- M_COVR Coverage 1
- M_NPUB 1
- M_NSYS 1
- MIPARE 1
- OBSTRN Obstruction 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/US4GA1AH.zip
- S-57 cell https://charts.openships.ai/noaa/s57/approach/US4GA1AH/1.0/US4GA1AH.000
- GeoJSON https://charts.openships.ai/noaa/s57/approach/US4GA1AH/1.0/US4GA1AH.geojson
- GeoParquet https://charts.openships.ai/noaa/s57/approach/US4GA1AH/1.0/US4GA1AH.parquet
- Metadata JSON https://charts.openships.ai/noaa/s57/approach/US4GA1AH/1.0/metadata.json
Editions
| Edition | Published | Metadata |
|---|---|---|
| 1.0 | Oct 24, 2024 | metadata.json |