NOAA S-57 chart cell

Alaska

US4AK6SU

Usage band
Approach · code 4
Current edition
1.0
Features
34
S-57 layers
12
Published
Jun 23, 2023
Manifest updated
Jun 22, 2026, 2:51 PM UTC

Coverage

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North
65.10000° N
South
64.80000° N
West
162.00000° W
East
161.40000° W
Center
64.95000° N, 161.70000° W
Bounds area
275 sq nm
Feature density
0.1238 / sq nm

Chart Statistics

12 largest layers shown

Average features per layer
2.8
Smallest layer
1
Largest layer
9
Area sq km
942
Features per sq km
0.03608
  1. LAKARE 9
  2. RIVERS River 7
  3. COALNE Coastline 4
  4. LNDRGN Land region 4
  5. LNDARE Land area 2
  6. M_NPUB 2
  7. DEPARE Depth area 1
  8. M_COVR Coverage 1
  9. M_NSYS 1
  10. M_QUAL Data quality 1
  11. MAGVAR Magnetic variation 1
  12. SEAARE Sea area 1

Nearby Chart Cells

Approach 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
1.0 Jun 23, 2023 metadata.json