NOAA S-57 chart cell

Approaches to Chesapeake Bay

US4VA1AG

Usage band
Approach · code 4
Current edition
4.11
Features
433
S-57 layers
38
Published
Jun 9, 2026
Manifest updated
Jun 22, 2026, 2:51 PM UTC

Coverage

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North
36.90000° N
South
36.60000° N
West
75.90000° W
East
75.60000° W
Center
36.75000° N, 75.75000° W
Bounds area
260 sq nm
Feature density
1.6657 / sq nm

Chart Statistics

20 largest layers shown

Average features per layer
11.4
Smallest layer
1
Largest layer
85
Area sq km
892
Features per sq km
0.48563
  1. SBDARE Seabed area 85
  2. DEPARE Depth area 84
  3. DEPCNT Depth contour 84
  4. SOUNDG Sounding 35
  5. M_QUAL Data quality 26
  6. WRECKS Wreck 15
  7. LIGHTS Light 14
  8. OBSTRN Obstruction 14
  9. BOYLAT Lateral buoy 12
  10. SEAARE Sea area 5
  11. CBLSUB 4
  12. COALNE Coastline 4
  13. CTNARE Caution area 4
  14. MAGVAR Magnetic variation 4
  15. RESARE 4
  16. TSSBND 4
  17. TSSLPT 4
  18. LNDRGN Land region 3
  19. MIPARE 3
  20. DMPGRD 2

Nearby Chart Cells

Approach usage band

  1. Dam Neck to Currituck Beach Light US4NC32M - about 14 nm away
  2. Approaches to Chesapeake Bay US4VA1AH - about 14 nm away
  3. North Atlantic Ocean and Back Bay US4VA1AF - about 14 nm away
  4. Approaches to Chesapeake Bay US4VA1BG - about 18 nm away
  5. Approaches to Chesapeake Bay US4VA1BH - about 23 nm away
  6. Chesapeake Bay Entrance US4VA1BF - 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
4.11 Jun 9, 2026 metadata.json