NOAA S-57 chart cell

Approaches to Saint Johns River

US4FL2PF

Usage band
Approach · code 4
Current edition
1.0
Features
169
S-57 layers
23
Published
Oct 24, 2024
Manifest updated
Jun 22, 2026, 2:51 PM UTC

Coverage

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North
30.30000° N
South
30.00000° N
West
81.30000° W
East
81.00000° W
Center
30.15000° N, 81.15000° W
Bounds area
281 sq nm
Feature density
0.6024 / sq nm

Chart Statistics

20 largest layers shown

Average features per layer
7.3
Smallest layer
1
Largest layer
37
Area sq km
962
Features per sq km
0.17563
  1. DEPCNT Depth contour 37
  2. DEPARE Depth area 34
  3. SBDARE Seabed area 34
  4. OBSTRN Obstruction 14
  5. SOUNDG Sounding 12
  6. CBLSUB 8
  7. M_QUAL Data quality 8
  8. MAGVAR Magnetic variation 4
  9. RESARE 3
  10. TWRTPT 2
  11. ADMARE 1
  12. BOYSPP Special purpose buoy 1
  13. CONZNE 1
  14. CTNARE Caution area 1
  15. DMPGRD 1
  16. EXEZNE 1
  17. LIGHTS Light 1
  18. M_COVR Coverage 1
  19. M_NPUB 1
  20. M_NSYS 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 Oct 24, 2024 metadata.json