NOAA S-57 chart cell

Approaches to Saint Johns River

US4FL2PG

Usage band
Approach · code 4
Current edition
1.0
Features
45
S-57 layers
17
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
81.00000° W
East
80.70000° W
Center
30.15000° N, 80.85000° W
Bounds area
281 sq nm
Feature density
0.1604 / sq nm

Chart Statistics

17 largest layers shown

Average features per layer
2.6
Smallest layer
1
Largest layer
8
Area sq km
962
Features per sq km
0.04677
  1. M_QUAL Data quality 8
  2. SBDARE Seabed area 7
  3. OBSTRN Obstruction 6
  4. CBLSUB 5
  5. SOUNDG Sounding 3
  6. DEPARE Depth area 2
  7. MAGVAR Magnetic variation 2
  8. RESARE 2
  9. TWRTPT 2
  10. CONZNE 1
  11. CTNARE Caution area 1
  12. DEPCNT Depth contour 1
  13. EXEZNE 1
  14. M_COVR Coverage 1
  15. M_NPUB 1
  16. M_NSYS 1
  17. SEAARE Sea area 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