NOAA S-57 chart cell

Alaska

US4AK7MO

Usage band
Approach · code 4
Current edition
1.2
Features
133
S-57 layers
20
Published
Jul 6, 2023
Manifest updated
Jun 22, 2026, 2:51 PM UTC

Coverage

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North
71.10000° N
South
70.80000° N
West
152.40000° W
East
151.20000° W
Center
70.95000° N, 151.80000° W
Bounds area
424 sq nm
Feature density
0.314 / sq nm

Chart Statistics

20 largest layers shown

Average features per layer
6.7
Smallest layer
1
Largest layer
24
Area sq km
1,453
Features per sq km
0.09155
  1. DEPCNT Depth contour 24
  2. DEPARE Depth area 22
  3. SBDARE Seabed area 22
  4. LAKARE 12
  5. SLOTOP 10
  6. M_QUAL Data quality 8
  7. SOUNDG Sounding 8
  8. COALNE Coastline 7
  9. LNDRGN Land region 4
  10. MAGVAR Magnetic variation 4
  11. LNDMRK 2
  12. M_NPUB 2
  13. ADMARE 1
  14. CONZNE 1
  15. CTNARE Caution area 1
  16. EXEZNE 1
  17. LNDARE Land area 1
  18. M_COVR Coverage 1
  19. M_NSYS 1
  20. SEAARE Sea area 1

Nearby Chart Cells

Approach usage band

  1. Alaska US4AK7LO - about 18 nm away
  2. Alaska US4AK7MN - about 24 nm away
  3. Alaska US4AK7MP - about 24 nm away
  4. Alaska US4AK7LN - about 30 nm away
  5. Alaska US4AK7LP - about 30 nm away
  6. Alaska US4AK7KO - about 36 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 Jul 6, 2023 metadata.json