NOAA S-57 chart cell
Maine
US4ME1AD
- Usage band
- Approach · code 4
- Current edition
- 1.1
- Features
- 447
- S-57 layers
- 26
- Published
- Jan 9, 2026
- Manifest updated
- Jun 22, 2026, 2:51 PM UTC
Coverage
- North
- 43.50000° N
- South
- 43.20000° N
- West
- 70.20000° W
- East
- 69.90000° W
- Center
- 43.35000° N, 70.05000° W
- Bounds area
- 236 sq nm
- Feature density
- 1.8947 / sq nm
Chart Statistics
20 largest layers shown
- Average features per layer
- 17.2
- Smallest layer
- 1
- Largest layer
- 181
- Area sq km
- 809
- Features per sq km
- 0.5524
- DEPARE Depth area 181
- DEPCNT Depth contour 180
- SBDARE Seabed area 33
- SOUNDG Sounding 10
- SEAARE Sea area 5
- M_QUAL Data quality 4
- MAGVAR Magnetic variation 4
- TSSLPT 4
- WRECKS Wreck 4
- TSSBND 3
- BOYLAT Lateral buoy 2
- DMPGRD 2
- TSEZNE 2
- ADMARE 1
- BCNLAT Lateral beacon 1
- CONZNE 1
- COSARE 1
- DAYMAR 1
- EXEZNE 1
- M_COVR Coverage 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/US4ME1AD.zip
- S-57 base cell https://charts.openships.ai/noaa/s57/approach/US4ME1AD/1.1/US4ME1AD.000
- S-57 update 001 https://charts.openships.ai/noaa/s57/approach/US4ME1AD/1.1/US4ME1AD.001
- GeoJSON https://charts.openships.ai/noaa/s57/approach/US4ME1AD/1.1/US4ME1AD.geojson
- GeoParquet https://charts.openships.ai/noaa/s57/approach/US4ME1AD/1.1/US4ME1AD.parquet
- Metadata JSON https://charts.openships.ai/noaa/s57/approach/US4ME1AD/1.1/metadata.json
Editions
| Edition | Published | Metadata |
|---|---|---|
| 1.1 | Jan 9, 2026 | metadata.json |