NOAA S-57 chart cell
Massachusetts
US3MA1AF
- Usage band
- Coastal · code 3
- Current edition
- 1.0
- Features
- 56
- S-57 layers
- 15
- Published
- Apr 17, 2026
- Manifest updated
- Jun 22, 2026, 2:51 PM UTC
Coverage
- North
- 40.80000° N
- South
- 39.60000° N
- West
- 67.20000° W
- East
- 66.00000° W
- Center
- 40.20000° N, 66.60000° W
- Bounds area
- 3,965 sq nm
- Feature density
- 0.0141 / sq nm
Chart Statistics
15 largest layers shown
- Average features per layer
- 3.7
- Smallest layer
- 1
- Largest layer
- 11
- Area sq km
- 13,599
- Features per sq km
- 0.00412
- CBLSUB 11
- SEAARE Sea area 10
- SOUNDG Sounding 7
- SBDARE Seabed area 6
- DEPARE Depth area 4
- M_QUAL Data quality 4
- DEPCNT Depth contour 3
- MAGVAR Magnetic variation 3
- M_NPUB 2
- ADMARE 1
- COSARE 1
- EXEZNE 1
- M_COVR Coverage 1
- M_NSYS 1
- WRECKS Wreck 1
Nearby Chart Cells
Coastal 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/US3MA1AF.zip
- S-57 cell https://charts.openships.ai/noaa/s57/coastal/US3MA1AF/1.0/US3MA1AF.000
- GeoJSON https://charts.openships.ai/noaa/s57/coastal/US3MA1AF/1.0/US3MA1AF.geojson
- GeoParquet https://charts.openships.ai/noaa/s57/coastal/US3MA1AF/1.0/US3MA1AF.parquet
- Metadata JSON https://charts.openships.ai/noaa/s57/coastal/US3MA1AF/1.0/metadata.json
Editions
| Edition | Published | Metadata |
|---|---|---|
| 1.0 | Apr 17, 2026 | metadata.json |