NOAA S-57 chart cell

Southern Massachusetts

US4MA1DE

Usage band
Approach · code 4
Current edition
1.10
Features
800
S-57 layers
40
Published
Apr 22, 2026
Manifest updated
Jun 22, 2026, 2:51 PM UTC

Coverage

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North
41.40000° N
South
41.10000° N
West
70.50000° W
East
70.20000° W
Center
41.25000° N, 70.35000° W
Bounds area
244 sq nm
Feature density
3.2797 / sq nm

Chart Statistics

20 largest layers shown

Average features per layer
20
Smallest layer
1
Largest layer
260
Area sq km
837
Features per sq km
0.95621
  1. DEPCNT Depth contour 260
  2. DEPARE Depth area 241
  3. SBDARE Seabed area 44
  4. COALNE Coastline 31
  5. SEAARE Sea area 30
  6. LNDRGN Land region 22
  7. SOUNDG Sounding 18
  8. CTNARE Caution area 17
  9. LNDARE Land area 17
  10. CBLSUB 16
  11. M_QUAL Data quality 14
  12. BOYLAT Lateral buoy 13
  13. LIGHTS Light 10
  14. WRECKS Wreck 9
  15. LNDMRK 7
  16. UWTROC Underwater rock 6
  17. RESARE 5
  18. ACHARE Anchorage area 4
  19. LAKARE 3
  20. RIVERS River 3

Nearby Chart Cells

Approach usage band

  1. Southern Massachusetts US4MA1DF - about 14 nm away
  2. Southern Massachusetts US4MA1DD - about 14 nm away
  3. Southern Massachusetts US4MA1CE - about 18 nm away
  4. Southern Massachusetts US4MA1EE - about 18 nm away
  5. Southern Massachusetts US4MA1EF - about 23 nm away
  6. Southern Massachusetts US4MA1ED - 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
1.10 Apr 22, 2026 metadata.json