NOAA S-57 chart cell

Unimak Pass, AK

US2ARCCC

Usage band
General · code 2
Current edition
1.1
Features
1,774
S-57 layers
46
Published
Jun 16, 2026
Manifest updated
Jun 22, 2026, 2:51 PM UTC

Coverage

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North
57.60000° N
South
52.80000° N
West
172.80000° W
East
163.20000° W
Center
55.20000° N, 168.00000° W
Bounds area
94,775 sq nm
Feature density
0.0187 / sq nm

Chart Statistics

20 largest layers shown

Average features per layer
38.6
Smallest layer
1
Largest layer
297
Area sq km
325,068
Features per sq km
0.00546
  1. SLOGRD 297
  2. COALNE Coastline 227
  3. LNDARE Land area 223
  4. SBDARE Seabed area 184
  5. LNDELV 118
  6. DEPCNT Depth contour 110
  7. UWTROC Underwater rock 109
  8. DEPARE Depth area 100
  9. SOUNDG Sounding 54
  10. RIVERS River 46
  11. LNDRGN Land region 39
  12. SEAARE Sea area 37
  13. M_QUAL Data quality 36
  14. OBSTRN Obstruction 29
  15. TESARE 29
  16. MAGVAR Magnetic variation 22
  17. WRECKS Wreck 15
  18. LAKARE 12
  19. LIGHTS Light 10
  20. ADMARE 8

Nearby Chart Cells

General usage band

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
1.1 Jun 16, 2026 metadata.json