NOAA S-57 chart cell

Massachusetts

US3MA1CD

Usage band
Coastal · code 3
Current edition
1.0
Features
920
S-57 layers
21
Published
Apr 17, 2026
Manifest updated
Jun 22, 2026, 2:51 PM UTC

Coverage

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North
43.20000° N
South
42.00000° N
West
69.60000° W
East
68.40000° W
Center
42.60000° N, 69.00000° W
Bounds area
3,821 sq nm
Feature density
0.2408 / sq nm

Chart Statistics

20 largest layers shown

Average features per layer
43.8
Smallest layer
1
Largest layer
396
Area sq km
13,106
Features per sq km
0.0702
  1. DEPARE Depth area 396
  2. DEPCNT Depth contour 392
  3. SBDARE Seabed area 39
  4. SEAARE Sea area 19
  5. DMPGRD 17
  6. OBSTRN Obstruction 14
  7. WRECKS Wreck 12
  8. SOUNDG Sounding 6
  9. M_QUAL Data quality 5
  10. MAGVAR Magnetic variation 4
  11. RESARE 4
  12. CBLSUB 3
  13. CONZNE 1
  14. COSARE 1
  15. CTNARE Caution area 1
  16. EXEZNE 1
  17. M_COVR Coverage 1
  18. M_NPUB 1
  19. M_NSYS 1
  20. UWTROC Underwater rock 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.

Editions

Edition Published Metadata
1.0 Apr 17, 2026 metadata.json