NOAA S-57 chart cell

Northern Massachusetts

US4MA1GF

Usage band
Approach · code 4
Current edition
1.2
Features
402
S-57 layers
45
Published
Mar 12, 2026
Manifest updated
Jun 22, 2026, 2:51 PM UTC

Coverage

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North
42.30000° N
South
42.00000° N
West
70.20000° W
East
69.90000° W
Center
42.15000° N, 70.05000° W
Bounds area
241 sq nm
Feature density
1.6713 / sq nm

Chart Statistics

20 largest layers shown

Average features per layer
8.9
Smallest layer
1
Largest layer
80
Area sq km
825
Features per sq km
0.48727
  1. DEPARE Depth area 80
  2. DEPCNT Depth contour 80
  3. SBDARE Seabed area 40
  4. SLCONS Shoreline construction 25
  5. COALNE Coastline 20
  6. M_QUAL Data quality 16
  7. RESARE 13
  8. WRECKS Wreck 13
  9. LNDRGN Land region 12
  10. LIGHTS Light 11
  11. LNDMRK 10
  12. LNDARE Land area 9
  13. SEAARE Sea area 8
  14. BUISGL 7
  15. SOUNDG Sounding 7
  16. CTNARE Caution area 5
  17. FOGSIG 4
  18. BOYSPP Special purpose buoy 3
  19. TSSLPT 3
  20. UWTROC Underwater rock 3

Nearby Chart Cells

Approach usage band

  1. Cape Cod Bay and North Atlantic Ocean US4MA1GE - about 13 nm away
  2. Northeast of Cape Cod US4MA1GG - about 13 nm away
  3. Southern Massachusetts US4MA1FF - about 18 nm away
  4. Stellwagen Bank and Wildcat Knoll US4MA1HF - about 18 nm away
  5. Northern Massachusetts US4MA1HE - 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
1.2 Mar 12, 2026 metadata.json