NOAA S-57 chart cell

Southern Massachusetts

US4MA1EF

Usage band
Approach · code 4
Current edition
2.9
Features
1,653
S-57 layers
46
Published
May 21, 2026
Manifest updated
Jun 22, 2026, 2:51 PM UTC

Coverage

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North
41.70000° N
South
41.40000° N
West
70.20000° W
East
69.90000° W
Center
41.55000° N, 70.05000° W
Bounds area
243 sq nm
Feature density
6.808 / sq nm

Chart Statistics

20 largest layers shown

Average features per layer
35.9
Smallest layer
1
Largest layer
548
Area sq km
833
Features per sq km
1.9849
  1. DEPCNT Depth contour 548
  2. DEPARE Depth area 528
  3. COALNE Coastline 97
  4. SBDARE Seabed area 91
  5. BOYLAT Lateral buoy 53
  6. LNDRGN Land region 49
  7. SEAARE Sea area 33
  8. LIGHTS Light 31
  9. SLCONS Shoreline construction 20
  10. SOUNDG Sounding 20
  11. WRECKS Wreck 18
  12. LNDARE Land area 15
  13. M_QUAL Data quality 14
  14. RIVERS River 11
  15. UWTROC Underwater rock 11
  16. BUAARE 9
  17. LAKARE 9
  18. OBSTRN Obstruction 8
  19. WATTUR 8
  20. BCNSPP Special purpose beacon 7

Nearby Chart Cells

Approach usage band

  1. Southern Massachusetts US4MA1EE - about 13 nm away
  2. Southern Massachusetts US4MA1EG - about 13 nm away
  3. Southern Massachusetts US4MA1DF - about 18 nm away
  4. Southern Massachusetts US4MA1FF - about 18 nm away
  5. Cape Cod Bay to Cape Cod Canal US4MA1FE - about 22 nm away
  6. Southern Massachusetts US4MA1FG - 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
2.9 May 21, 2026 metadata.json