NOAA S-57 chart cell
Maine
US4ME1BF
- Usage band
- Approach · code 4
- Current edition
- 1.2
- Features
- 1,156
- S-57 layers
- 40
- Published
- Oct 8, 2025
- Manifest updated
- Jun 22, 2026, 2:51 PM UTC
Coverage
- North
- 43.80000° N
- South
- 43.50000° N
- West
- 69.60000° W
- East
- 69.30000° W
- Center
- 43.65000° N, 69.45000° W
- Bounds area
- 235 sq nm
- Feature density
- 4.9243 / sq nm
Chart Statistics
20 largest layers shown
- Average features per layer
- 28.9
- Smallest layer
- 1
- Largest layer
- 420
- Area sq km
- 805
- Features per sq km
- 1.4357
- DEPCNT Depth contour 420
- DEPARE Depth area 416
- SBDARE Seabed area 99
- UWTROC Underwater rock 51
- LNDARE Land area 43
- OBSTRN Obstruction 25
- COALNE Coastline 22
- SEAARE Sea area 15
- SOUNDG Sounding 8
- M_QUAL Data quality 6
- LNDRGN Land region 5
- BOYLAT Lateral buoy 4
- LIGHTS Light 4
- LNDELV 4
- LNDMRK 3
- MAGVAR Magnetic variation 3
- ADMARE 2
- BOYSPP Special purpose buoy 2
- CBLARE 2
- FOGSIG 2
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/US4ME1BF.zip
- S-57 base cell https://charts.openships.ai/noaa/s57/approach/US4ME1BF/1.2/US4ME1BF.000
- S-57 update 001 https://charts.openships.ai/noaa/s57/approach/US4ME1BF/1.2/US4ME1BF.001
- S-57 update 002 https://charts.openships.ai/noaa/s57/approach/US4ME1BF/1.2/US4ME1BF.002
- GeoJSON https://charts.openships.ai/noaa/s57/approach/US4ME1BF/1.2/US4ME1BF.geojson
- GeoParquet https://charts.openships.ai/noaa/s57/approach/US4ME1BF/1.2/US4ME1BF.parquet
- Metadata JSON https://charts.openships.ai/noaa/s57/approach/US4ME1BF/1.2/metadata.json
Editions
| Edition | Published | Metadata |
|---|---|---|
| 1.2 | Oct 8, 2025 | metadata.json |