NOAA S-57 chart cell

Lake Michigan - Northport to Spider Island, WI

US4WI1KS

Usage band
Approach · code 4
Current edition
1.1
Features
374
S-57 layers
32
Published
Sep 25, 2024
Manifest updated
Jun 22, 2026, 2:51 PM UTC

Coverage

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North
45.30000° N
South
45.00000° N
West
87.00000° W
East
86.70000° W
Center
45.15000° N, 86.85000° W
Bounds area
229 sq nm
Feature density
1.6345 / sq nm

Chart Statistics

20 largest layers shown

Average features per layer
11.7
Smallest layer
1
Largest layer
130
Area sq km
785
Features per sq km
0.47656
  1. DEPCNT Depth contour 130
  2. DEPARE Depth area 105
  3. OBSTRN Obstruction 20
  4. COALNE Coastline 16
  5. LNDARE Land area 15
  6. SBDARE Seabed area 10
  7. SEAARE Sea area 10
  8. UWTROC Underwater rock 10
  9. BOYLAT Lateral buoy 7
  10. RECTRC 7
  11. LNDRGN Land region 6
  12. SOUNDG Sounding 5
  13. LIGHTS Light 4
  14. MAGVAR Magnetic variation 4
  15. M_QUAL Data quality 3
  16. SLCONS Shoreline construction 3
  17. BCNLAT Lateral beacon 2
  18. CBLSUB 2
  19. DAYMAR 2
  20. BUAARE 1

Nearby Chart Cells

Approach usage band

  1. Lake Michigan - Lake Center between Rowleys Bay, WI and North Manitou Island, MI US4MI2LN - about 13 nm away
  2. Green Bay - Egg Harbor to Wisconsin Bay to Baileys Harbor, WI US4WI1KR - about 13 nm away
  3. Lake Michigan - Lake Center between Whitefish Bay, WI and Empire, MI US4WI1JS - about 18 nm away
  4. Lake Michigan - Saint Martin Island, MI to Washington Island, WI US4WI1LS - about 18 nm away
  5. Lake Michigan - Summer Island and Poverty Island, MI US4MI2MN - about 22 nm away
  6. Green Bay - Bark River to Whaleback Shoal, MI US4MI2ML - 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
1.1 Sep 25, 2024 metadata.json