NOAA S-57 chart cell

Approaches to Saint Marys River

US4FL2RF

Usage band
Approach · code 4
Current edition
2.0
Features
202
S-57 layers
29
Published
Apr 30, 2025
Manifest updated
Jun 22, 2026, 2:51 PM UTC

Coverage

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North
30.90000° N
South
30.60000° N
West
81.30000° W
East
81.00000° W
Center
30.75000° N, 81.15000° W
Bounds area
279 sq nm
Feature density
0.7245 / sq nm

Chart Statistics

20 largest layers shown

Average features per layer
7
Smallest layer
1
Largest layer
49
Area sq km
956
Features per sq km
0.21122
  1. SBDARE Seabed area 49
  2. DEPCNT Depth contour 43
  3. DEPARE Depth area 38
  4. M_QUAL Data quality 16
  5. OBSTRN Obstruction 10
  6. SOUNDG Sounding 8
  7. WRECKS Wreck 5
  8. LIGHTS Light 4
  9. RESARE 4
  10. MAGVAR Magnetic variation 3
  11. TWRTPT 3
  12. BOYLAT Lateral buoy 2
  13. BOYSAW 1
  14. BOYSPP Special purpose buoy 1
  15. C_AGGR 1
  16. CONZNE 1
  17. CTNARE Caution area 1
  18. EXEZNE 1
  19. FAIRWY Fairway 1
  20. M_COVR Coverage 1

Nearby Chart Cells

Approach usage band

  1. Approaches to Saint Marys River US4FL2RE - about 15 nm away
  2. Approaches to Saint Marys River US4FL2RG - about 15 nm away
  3. Approaches to Brunswick River US4GA1AG - about 18 nm away
  4. Approaches to Saint Johns River and Saint Marys River US4FL2QF - about 18 nm away
  5. Approaches to Brunswick River US4GA1AF - about 24 nm away
  6. Approaches to Brunswick River US4GA1AH - about 24 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
2.0 Apr 30, 2025 metadata.json