NOAA S-57 chart cell

Approaches to San Diego Bay

US4CA74M

Usage band
Approach · code 4
Current edition
16.3
Features
1,576
S-57 layers
61
Published
Apr 1, 2026
Manifest updated
Jun 22, 2026, 2:51 PM UTC

Coverage

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North
33.01185° N
South
32.37074° N
West
118.01344° W
East
116.78850° W
Center
32.69129° N, 117.40097° W
Bounds area
2,383 sq nm
Feature density
0.6615 / sq nm

Chart Statistics

20 largest layers shown

Average features per layer
25.8
Smallest layer
1
Largest layer
649
Area sq km
8,172
Features per sq km
0.19286
  1. SLCONS Shoreline construction 649
  2. DEPCNT Depth contour 160
  3. DEPARE Depth area 128
  4. SBDARE Seabed area 101
  5. COALNE Coastline 88
  6. WRECKS Wreck 37
  7. LIGHTS Light 36
  8. PONTON 36
  9. BUAARE 35
  10. LNDMRK 35
  11. UWTROC Underwater rock 32
  12. M_QUAL Data quality 31
  13. LNDARE Land area 23
  14. BOYSPP Special purpose buoy 20
  15. OBSTRN Obstruction 18
  16. LNDRGN Land region 17
  17. SOUNDG Sounding 15
  18. RIVERS River 8
  19. BRIDGE 7
  20. FOGSIG 6

Nearby Chart Cells

Approach usage band

  1. Gulf of Santa Catalina;Delmar Boat Basin-Camp Pendleton US4CA73M - about 35 nm away
  2. San Pedro Channel US4CA60M - about 62 nm away
  3. Santa Monica Basin - South of Point Dume, CA US4CA1FR - about 100 nm away
  4. Santa Barbara Channel - Laguna Point to Point Dume, CA US4CA1GR - about 113 nm away
  5. Santa Barbara Channel - Mandalay Beach to Laguna Point, CA US4CA1GQ - about 123 nm away
  6. Santa Barbara Channel - East Santa Cruz Island, CA US4CA1GP - about 135 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
16.3 Apr 1, 2026 metadata.json