NOAA S-57 chart cell

Gulf of Alaska

US4AK5VB

Usage band
Approach · code 4
Current edition
1.1
Features
1,370
S-57 layers
39
Published
Mar 14, 2025
Manifest updated
Jun 22, 2026, 2:51 PM UTC

Coverage

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North
59.70000° N
South
59.40000° N
West
139.80000° W
East
139.20000° W
Center
59.55000° N, 139.50000° W
Bounds area
329 sq nm
Feature density
4.1661 / sq nm

Chart Statistics

20 largest layers shown

Average features per layer
35.1
Smallest layer
1
Largest layer
429
Area sq km
1,128
Features per sq km
1.21465
  1. UWTROC Underwater rock 429
  2. DEPCNT Depth contour 326
  3. DEPARE Depth area 290
  4. COALNE Coastline 61
  5. SBDARE Seabed area 57
  6. LNDARE Land area 55
  7. RIVERS River 23
  8. OBSTRN Obstruction 18
  9. M_QUAL Data quality 15
  10. SEAARE Sea area 15
  11. LNDRGN Land region 12
  12. SLCONS Shoreline construction 10
  13. SOUNDG Sounding 10
  14. LIGHTS Light 6
  15. WEDKLP 6
  16. WATTUR 4
  17. LNDMRK 3
  18. BCNSPP Special purpose beacon 2
  19. BOYLAT Lateral buoy 2
  20. BOYSPP Special purpose buoy 2

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
1.1 Mar 14, 2025 metadata.json