NOAA S-57 chart cell

Chesapeake Bay Entrance

US4VA1BF

Usage band
Approach · code 4
Current edition
1.13
Features
1,639
S-57 layers
65
Published
Jun 17, 2026
Manifest updated
Jun 22, 2026, 2:51 PM UTC

Coverage

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North
37.20000° N
South
36.90000° N
West
76.20000° W
East
75.90000° W
Center
37.05000° N, 76.05000° W
Bounds area
259 sq nm
Feature density
6.3297 / sq nm

Chart Statistics

20 largest layers shown

Average features per layer
25.2
Smallest layer
1
Largest layer
236
Area sq km
888
Features per sq km
1.84545
  1. DEPCNT Depth contour 236
  2. SLCONS Shoreline construction 200
  3. OBSTRN Obstruction 178
  4. DEPARE Depth area 168
  5. COALNE Coastline 109
  6. SBDARE Seabed area 102
  7. LIGHTS Light 75
  8. M_QUAL Data quality 65
  9. BOYLAT Lateral buoy 62
  10. LNDARE Land area 56
  11. LNDRGN Land region 42
  12. SOUNDG Sounding 36
  13. SEAARE Sea area 33
  14. WRECKS Wreck 33
  15. BRIDGE 29
  16. CTNARE Caution area 19
  17. DRGARE 19
  18. BCNSPP Special purpose beacon 15
  19. LNDMRK 13
  20. FAIRWY Fairway 12

Nearby Chart Cells

Approach usage band

  1. Chesapeake Bay - Hampton Roads to Poquoson River US4VA1BE - about 14 nm away
  2. Approaches to Chesapeake Bay US4VA1BG - about 14 nm away
  3. North Atlantic Ocean and Back Bay US4VA1AF - about 18 nm away
  4. Chesapeake Bay - Cape Charles to Silver Beach US4VA1CF - about 18 nm away
  5. Chesapeake Bay - Mobjack Bay and York River US4VA1CE - about 23 nm away
  6. North Atlantic Ocean - Quinby Inlet, Great Machipongo Inlet and Ship Shoal Inlet US4VA1CG - 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
1.13 Jun 17, 2026 metadata.json