NOAA S-57 chart cell
Southern Massachusetts
US4MA1FG
- Usage band
- Approach · code 4
- Current edition
- 2.0
- Features
- 90
- S-57 layers
- 22
- Published
- Apr 29, 2024
- Manifest updated
- Jun 22, 2026, 2:51 PM UTC
Coverage
- North
- 42.00000° N
- South
- 41.70000° N
- West
- 69.90000° W
- East
- 69.60000° W
- Center
- 41.85000° N, 69.75000° W
- Bounds area
- 242 sq nm
- Feature density
- 0.3724 / sq nm
Chart Statistics
20 largest layers shown
- Average features per layer
- 4.1
- Smallest layer
- 1
- Largest layer
- 25
- Area sq km
- 829
- Features per sq km
- 0.10858
- SBDARE Seabed area 25
- DEPARE Depth area 16
- DEPCNT Depth contour 15
- RESARE 3
- SEAARE Sea area 3
- SOUNDG Sounding 3
- CBLSUB 2
- CTNARE Caution area 2
- M_NPUB 2
- M_QUAL Data quality 2
- MAGVAR Magnetic variation 2
- OBSTRN Obstruction 2
- TSSBND 2
- TSSLPT 2
- WRECKS Wreck 2
- ADMARE 1
- CONZNE 1
- EXEZNE 1
- M_COVR Coverage 1
- M_NSYS 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/US4MA1FG.zip
- S-57 cell https://charts.openships.ai/noaa/s57/approach/US4MA1FG/2.0/US4MA1FG.000
- GeoJSON https://charts.openships.ai/noaa/s57/approach/US4MA1FG/2.0/US4MA1FG.geojson
- GeoParquet https://charts.openships.ai/noaa/s57/approach/US4MA1FG/2.0/US4MA1FG.parquet
- Metadata JSON https://charts.openships.ai/noaa/s57/approach/US4MA1FG/2.0/metadata.json
Editions
| Edition | Published | Metadata |
|---|---|---|
| 2.0 | Apr 29, 2024 | metadata.json |