NOAA S-57 chart cell

Chesapeake Bay - Rappahannock Shoal Channel

US4VA1DF

Usage band
Approach · code 4
Current edition
1.3
Features
850
S-57 layers
43
Published
Mar 24, 2026
Manifest updated
Jun 22, 2026, 2:51 PM UTC

Coverage

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North
37.80000° N
South
37.50000° N
West
76.20000° W
East
75.90000° W
Center
37.65000° N, 76.05000° W
Bounds area
257 sq nm
Feature density
3.309 / sq nm

Chart Statistics

20 largest layers shown

Average features per layer
19.8
Smallest layer
1
Largest layer
154
Area sq km
881
Features per sq km
0.96475
  1. SBDARE Seabed area 154
  2. DEPARE Depth area 134
  3. DEPCNT Depth contour 134
  4. OBSTRN Obstruction 37
  5. RIVERS River 37
  6. LIGHTS Light 36
  7. COALNE Coastline 35
  8. DAYMAR 28
  9. BOYLAT Lateral buoy 27
  10. SOUNDG Sounding 26
  11. M_QUAL Data quality 24
  12. LNDRGN Land region 22
  13. WRECKS Wreck 19
  14. BCNSPP Special purpose beacon 15
  15. BCNLAT Lateral beacon 14
  16. LAKARE 14
  17. SLCONS Shoreline construction 13
  18. CTNARE Caution area 11
  19. PILPNT 11
  20. LNDARE Land area 10

Nearby Chart Cells

Approach usage band

  1. Chesapeake Bay - Hacks Neck to Tangier Sound to Smith Point US4VA40M - about 2 nm away
  2. Chesapeake Bay - Rappahannock River Entrance and Piankatank River US4VA1DE - about 14 nm away
  3. Chesapeake Bay - Onancock Creek and North Atlantic Ocean - Wachapreague Inlet US4VA1DG - about 14 nm away
  4. Chesapeake Bay - Cape Charles to Silver Beach US4VA1CF - about 18 nm away
  5. Chesapeake Bay - Tangier Sound US4MD1AE - about 18 nm away
  6. Chesapeake Bay - Pocomoke Sound and Big Annemessex River US4MD1AF - about 23 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
1.3 Mar 24, 2026 metadata.json