NOAA S-57 chart cell

Prince William Sound, Alaska

US4AK4RP

Usage band
Approach · code 4
Current edition
2.2
Features
626
S-57 layers
39
Published
Feb 6, 2025
Manifest updated
Jun 22, 2026, 2:51 PM UTC

Coverage

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North
60.30000° N
South
60.00000° N
West
147.00000° W
East
146.40000° W
Center
60.15000° N, 146.70000° W
Bounds area
323 sq nm
Feature density
1.9383 / sq nm

Chart Statistics

20 largest layers shown

Average features per layer
16.1
Smallest layer
1
Largest layer
198
Area sq km
1,108
Features per sq km
0.56511
  1. UWTROC Underwater rock 198
  2. DEPCNT Depth contour 99
  3. DEPARE Depth area 94
  4. SBDARE Seabed area 83
  5. LNDARE Land area 29
  6. COALNE Coastline 24
  7. OBSTRN Obstruction 16
  8. M_QUAL Data quality 12
  9. SOUNDG Sounding 12
  10. SEAARE Sea area 9
  11. LIGHTS Light 6
  12. RIVERS River 4
  13. WEDKLP 4
  14. WRECKS Wreck 4
  15. LNDRGN Land region 3
  16. BCNSPP Special purpose beacon 2
  17. CTNARE Caution area 2
  18. LNDELV 2
  19. SLOGRD 2
  20. TESARE 2

Nearby Chart Cells

Approach usage band

  1. Prince William Sound, Alaska US4AK4RQ - about 18 nm away
  2. Prince William Sound, Alaska US4AK4RO - about 18 nm away
  3. Prince William Sound, Alaska US4AK4SP - about 18 nm away
  4. Prince William Sound, Alaska US4AK4SQ - about 25 nm away
  5. Prince William Sound, Alaska US4AK4SO - about 25 nm away
  6. Prince William Sound, Alaska US4AK4QO - about 25 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
2.2 Feb 6, 2025 metadata.json