NOAA S-57 chart cell

Lake Michigan - Saint Martin Island, MI to Washington Island, WI

US4WI1LS

Usage band
Approach · code 4
Current edition
1.4
Features
650
S-57 layers
41
Published
Apr 29, 2025
Manifest updated
Jun 22, 2026, 2:51 PM UTC

Coverage

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North
45.60000° N
South
45.30000° N
West
87.00000° W
East
86.70000° W
Center
45.45000° N, 86.85000° W
Bounds area
228 sq nm
Feature density
2.8558 / sq nm

Chart Statistics

20 largest layers shown

Average features per layer
15.9
Smallest layer
1
Largest layer
187
Area sq km
781
Features per sq km
0.83263
  1. DEPCNT Depth contour 187
  2. DEPARE Depth area 140
  3. SBDARE Seabed area 54
  4. LNDARE Land area 44
  5. UWTROC Underwater rock 34
  6. COALNE Coastline 24
  7. SEAARE Sea area 22
  8. LIGHTS Light 20
  9. OBSTRN Obstruction 20
  10. BOYLAT Lateral buoy 16
  11. RECTRC 9
  12. DAYMAR 7
  13. LNDRGN Land region 7
  14. M_QUAL Data quality 7
  15. BCNSPP Special purpose beacon 6
  16. CBLSUB 5
  17. FOGSIG 5
  18. BCNLAT Lateral beacon 4
  19. FERYRT 4
  20. LNDMRK 4

Nearby Chart Cells

Approach usage band

  1. Lake Michigan - Summer Island and Poverty Island, MI US4MI2MN - about 13 nm away
  2. Green Bay - Bark River to Whaleback Shoal, MI US4MI2ML - about 13 nm away
  3. Lake Michigan - Black George Creek to Ogontz Bay, MI US4MI2NM - about 18 nm away
  4. Lake Michigan - Northport to Spider Island, WI US4WI1KS - about 18 nm away
  5. Lake Michigan - Garden Peninsula - Nahma to Parent Bay, MI US4MI2NN - about 22 nm away
  6. Lake Michigan - Little Bay De Noc - Escanaba to Gladstone, MI US4MI2NL - about 22 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
1.4 Apr 29, 2025 metadata.json