NOAA S-57 chart cell

Approaches to Chesapeake Bay

US4VA1BG

Usage band
Approach · code 4
Current edition
1.7
Features
660
S-57 layers
38
Published
May 15, 2026
Manifest updated
Jun 22, 2026, 2:51 PM UTC

Coverage

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North
37.20000° N
South
36.90000° N
West
75.90000° W
East
75.60000° W
Center
37.05000° N, 75.75000° W
Bounds area
259 sq nm
Feature density
2.5489 / sq nm

Chart Statistics

20 largest layers shown

Average features per layer
17.4
Smallest layer
1
Largest layer
143
Area sq km
888
Features per sq km
0.74314
  1. DEPCNT Depth contour 143
  2. DEPARE Depth area 140
  3. SBDARE Seabed area 98
  4. RIVERS River 45
  5. SOUNDG Sounding 29
  6. COALNE Coastline 27
  7. M_QUAL Data quality 25
  8. LNDARE Land area 21
  9. SEAARE Sea area 16
  10. OBSTRN Obstruction 15
  11. MARCUL 14
  12. LNDRGN Land region 13
  13. LIGHTS Light 8
  14. BOYSPP Special purpose buoy 7
  15. RESARE 7
  16. WRECKS Wreck 7
  17. CTNARE Caution area 6
  18. TSSLPT 5
  19. WATTUR 5
  20. TSSBND 4

Nearby Chart Cells

Approach usage band

  1. Approaches to Chesapeake Bay US4VA1BH - about 14 nm away
  2. Chesapeake Bay Entrance US4VA1BF - about 14 nm away
  3. Approaches to Chesapeake Bay US4VA1AG - about 18 nm away
  4. North Atlantic Ocean - Quinby Inlet, Great Machipongo Inlet and Ship Shoal Inlet US4VA1CG - about 18 nm away
  5. Approaches to Quinby and Great Machipongo Inlets US4VA1CH - about 23 nm away
  6. Chesapeake Bay - Cape Charles to Silver Beach US4VA1CF - 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
1.7 May 15, 2026 metadata.json