NOAA S-57 chart cell
Massachusetts
US3MA1AD
- Usage band
- Coastal · code 3
- Current edition
- 1.0
- Features
- 170
- S-57 layers
- 23
- Published
- Apr 17, 2026
- Manifest updated
- Jun 22, 2026, 2:51 PM UTC
Coverage
- North
- 40.80000° N
- South
- 39.60000° N
- West
- 69.60000° W
- East
- 68.40000° W
- Center
- 40.20000° N, 69.00000° W
- Bounds area
- 3,965 sq nm
- Feature density
- 0.0429 / sq nm
Chart Statistics
20 largest layers shown
- Average features per layer
- 7.4
- Smallest layer
- 1
- Largest layer
- 42
- Area sq km
- 13,599
- Features per sq km
- 0.0125
- DEPCNT Depth contour 42
- DEPARE Depth area 40
- SBDARE Seabed area 29
- WRECKS Wreck 13
- SEAARE Sea area 9
- CBLSUB 6
- SOUNDG Sounding 6
- M_QUAL Data quality 4
- MAGVAR Magnetic variation 3
- M_NPUB 2
- OBSTRN Obstruction 2
- TSSBND 2
- TSSLPT 2
- BOYSPP Special purpose buoy 1
- C_AGGR 1
- COSARE 1
- EXEZNE 1
- LIGHTS Light 1
- M_COVR Coverage 1
- M_NSYS 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/US3MA1AD.zip
- S-57 cell https://charts.openships.ai/noaa/s57/coastal/US3MA1AD/1.0/US3MA1AD.000
- GeoJSON https://charts.openships.ai/noaa/s57/coastal/US3MA1AD/1.0/US3MA1AD.geojson
- GeoParquet https://charts.openships.ai/noaa/s57/coastal/US3MA1AD/1.0/US3MA1AD.parquet
- Metadata JSON https://charts.openships.ai/noaa/s57/coastal/US3MA1AD/1.0/metadata.json
Editions
| Edition | Published | Metadata |
|---|---|---|
| 1.0 | Apr 17, 2026 | metadata.json |