NOAA S-57 chart cell
Connecticut
US4CT1AC
- Usage band
- Approach · code 4
- Current edition
- 1.3
- Features
- 1,643
- S-57 layers
- 45
- Published
- Apr 17, 2026
- Manifest updated
- Jun 22, 2026, 2:51 PM UTC
Coverage
- North
- 41.40000° N
- South
- 41.10000° N
- West
- 72.90000° W
- East
- 72.60000° W
- Center
- 41.25000° N, 72.75000° W
- Bounds area
- 244 sq nm
- Feature density
- 6.7357 / sq nm
Chart Statistics
20 largest layers shown
- Average features per layer
- 36.5
- Smallest layer
- 1
- Largest layer
- 386
- Area sq km
- 837
- Features per sq km
- 1.96381
- COALNE Coastline 386
- UWTROC Underwater rock 278
- LNDARE Land area 160
- LNDRGN Land region 130
- SLCONS Shoreline construction 126
- DEPCNT Depth contour 86
- DEPARE Depth area 73
- OBSTRN Obstruction 55
- SBDARE Seabed area 52
- BOYLAT Lateral buoy 47
- BRIDGE 33
- SEAARE Sea area 29
- RIVERS River 25
- LIGHTS Light 23
- PONTON 21
- M_QUAL Data quality 15
- LNDMRK 14
- WRECKS Wreck 13
- SOUNDG Sounding 11
- BUAARE 10
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/US4CT1AC.zip
- S-57 base cell https://charts.openships.ai/noaa/s57/approach/US4CT1AC/1.3/US4CT1AC.000
- S-57 update 001 https://charts.openships.ai/noaa/s57/approach/US4CT1AC/1.3/US4CT1AC.001
- S-57 update 002 https://charts.openships.ai/noaa/s57/approach/US4CT1AC/1.3/US4CT1AC.002
- S-57 update 003 https://charts.openships.ai/noaa/s57/approach/US4CT1AC/1.3/US4CT1AC.003
- GeoJSON https://charts.openships.ai/noaa/s57/approach/US4CT1AC/1.3/US4CT1AC.geojson
- GeoParquet https://charts.openships.ai/noaa/s57/approach/US4CT1AC/1.3/US4CT1AC.parquet
- Metadata JSON https://charts.openships.ai/noaa/s57/approach/US4CT1AC/1.3/metadata.json
Editions
| Edition | Published | Metadata |
|---|---|---|
| 1.3 | Apr 17, 2026 | metadata.json |