NOAA S-57 chart cell

Southern Massachusetts

US4MA1ED

Usage band
Approach · code 4
Current edition
1.6
Features
2,070
S-57 layers
45
Published
May 28, 2026
Manifest updated
Jun 22, 2026, 2:51 PM UTC

Coverage

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North
41.70000° N
South
41.40000° N
West
70.80000° W
East
70.50000° W
Center
41.55000° N, 70.65000° W
Bounds area
243 sq nm
Feature density
8.5255 / sq nm

Chart Statistics

20 largest layers shown

Average features per layer
46
Smallest layer
1
Largest layer
391
Area sq km
833
Features per sq km
2.48563
  1. UWTROC Underwater rock 391
  2. DEPCNT Depth contour 296
  3. DEPARE Depth area 281
  4. COALNE Coastline 242
  5. SBDARE Seabed area 129
  6. LNDRGN Land region 101
  7. SLCONS Shoreline construction 92
  8. LNDARE Land area 55
  9. SEAARE Sea area 55
  10. BOYLAT Lateral buoy 53
  11. LIGHTS Light 47
  12. RIVERS River 45
  13. M_QUAL Data quality 35
  14. OBSTRN Obstruction 35
  15. LAKARE 26
  16. CTNARE Caution area 23
  17. LNDMRK 20
  18. BUAARE 17
  19. FOGSIG 17
  20. SOUNDG Sounding 15

Nearby Chart Cells

Approach usage band

  1. Southern Massachusetts US4MA1EC - about 13 nm away
  2. Southern Massachusetts US4MA1EE - about 13 nm away
  3. Southern Massachusetts US4MA1DD - about 18 nm away
  4. Cape Cod Canal and Bay US4MA1FD - about 18 nm away
  5. Southern Massachusetts US4MA1FC - about 22 nm away
  6. Cape Cod Bay to Cape Cod Canal US4MA1FE - about 22 nm away

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.

Editions

Edition Published Metadata
1.6 May 28, 2026 metadata.json