NOAA S-57 chart cell

Southern Massachusetts

US4MA1CD

Usage band
Approach · code 4
Current edition
1.17
Features
100
S-57 layers
23
Published
Feb 4, 2026
Manifest updated
Jun 22, 2026, 2:51 PM UTC

Coverage

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North
41.10000° N
South
40.80000° N
West
70.80000° W
East
70.50000° W
Center
40.95000° N, 70.65000° W
Bounds area
245 sq nm
Feature density
0.4081 / sq nm

Chart Statistics

20 largest layers shown

Average features per layer
4.3
Smallest layer
1
Largest layer
20
Area sq km
840
Features per sq km
0.11898
  1. LIGHTS Light 20
  2. LNDARE Land area 19
  3. LNDMRK 19
  4. DEPARE Depth area 5
  5. SBDARE Seabed area 5
  6. CBLSUB 4
  7. DEPCNT Depth contour 4
  8. SOUNDG Sounding 4
  9. WRECKS Wreck 3
  10. M_NPUB 2
  11. M_QUAL Data quality 2
  12. MAGVAR Magnetic variation 2
  13. BOYSPP Special purpose buoy 1
  14. CONZNE 1
  15. COSARE 1
  16. CTNARE Caution area 1
  17. DMPGRD 1
  18. EXEZNE 1
  19. M_COVR Coverage 1
  20. M_NSYS 1

Nearby Chart Cells

Approach usage band

  1. Southern Massachusetts US4MA1CC - about 14 nm away
  2. Southern Massachusetts US4MA1CE - about 14 nm away
  3. Southern Massachusetts US4MA1DD - about 18 nm away
  4. Southern Massachusetts US4MA1BD - about 18 nm away
  5. Southern Massachusetts US4MA1DC - about 23 nm away
  6. Southern Massachusetts US4MA1DE - about 23 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
1.17 Feb 4, 2026 metadata.json