NOAA S-57 chart cell

Gulf of the Farallones

US4CA11M

Usage band
Approach · code 4
Current edition
40.1
Features
1,011
S-57 layers
50
Published
Apr 22, 2026
Manifest updated
Jun 22, 2026, 2:51 PM UTC

Coverage

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North
38.09846° N
South
37.43459° N
West
123.51561° W
East
122.40345° W
Center
37.76652° N, 122.95953° W
Bounds area
2,104 sq nm
Feature density
0.4805 / sq nm

Chart Statistics

20 largest layers shown

Average features per layer
20.2
Smallest layer
1
Largest layer
146
Area sq km
7,217
Features per sq km
0.1401
  1. SLCONS Shoreline construction 146
  2. COALNE Coastline 142
  3. UWTROC Underwater rock 120
  4. DEPCNT Depth contour 80
  5. SBDARE Seabed area 60
  6. LNDARE Land area 55
  7. DEPARE Depth area 52
  8. LNDRGN Land region 45
  9. RIVERS River 33
  10. WEDKLP 29
  11. SEAARE Sea area 23
  12. M_QUAL Data quality 20
  13. SLOTOP 20
  14. OBSTRN Obstruction 19
  15. LNDMRK 17
  16. BUISGL 16
  17. LIGHTS Light 16
  18. SOUNDG Sounding 13
  19. LAKARE 10
  20. LNDELV 10

Nearby Chart Cells

Approach usage band

  1. Gulf of the Farallones - East of the Farallon Islands, CA US4CA2BI - about 9 nm away
  2. Gulf of the Farallones - Farallon Islands, CA US4CA2BH - about 11 nm away
  3. Gulf of the Farallones - Offshore of Point Reyes Beach, CA US4CA2CH - about 14 nm away
  4. Approaches to San Francisco Bay - Golden Gate to Half Moon Bay, CA US4CA2BJ - about 21 nm away
  5. Approaches to San Francisco Bay - West of the Farallon Islands, CA US4CA2BG - about 24 nm away
  6. Approaches to San Francisco Bay - Seaward of Half Moon Bay, CA US4CA1AI - about 26 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
40.1 Apr 22, 2026 metadata.json