NOAA S-57 chart cell

Northern Massachusetts

US4MA1IC

Usage band
Approach · code 4
Current edition
1.5
Features
627
S-57 layers
41
Published
Jan 16, 2026
Manifest updated
Jun 22, 2026, 2:51 PM UTC

Coverage

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North
42.90000° N
South
42.60000° N
West
71.10000° W
East
70.80000° W
Center
42.75000° N, 70.95000° W
Bounds area
238 sq nm
Feature density
2.6318 / sq nm

Chart Statistics

20 largest layers shown

Average features per layer
15.3
Smallest layer
1
Largest layer
142
Area sq km
817
Features per sq km
0.7673
  1. LNDRGN Land region 142
  2. RIVERS River 128
  3. COALNE Coastline 77
  4. SLCONS Shoreline construction 50
  5. BRIDGE 33
  6. LNDARE Land area 32
  7. DEPARE Depth area 18
  8. BUAARE 16
  9. DEPCNT Depth contour 14
  10. LAKARE 12
  11. SEAARE Sea area 12
  12. UWTROC Underwater rock 10
  13. BUISGL 8
  14. LNDMRK 8
  15. CBLOHD 7
  16. M_QUAL Data quality 7
  17. CTNARE Caution area 6
  18. RESARE 6
  19. BOYLAT Lateral buoy 4
  20. LIGHTS Light 4

Nearby Chart Cells

Approach usage band

  1. Northern Massachusetts US4MA1ID - about 13 nm away
  2. New Hampshire US4NH1BC - about 18 nm away
  3. Northern Massachusetts US4MA1HC - about 18 nm away
  4. New Hampshire US4NH1BD - about 22 nm away
  5. Northern Massachusetts US4MA1HD - about 22 nm away
  6. Northern Massachusetts US4MA1IE - about 26 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
1.5 Jan 16, 2026 metadata.json