NOAA S-57 chart cell

Lake Michigan & Lake Huron - Straits of Mackinac, MI

US4MI1ND

Usage band
Approach · code 4
Current edition
1.5
Features
737
S-57 layers
51
Published
Dec 17, 2025
Manifest updated
Jun 22, 2026, 2:51 PM UTC

Coverage

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North
45.90000° N
South
45.60000° N
West
84.90000° W
East
84.60000° W
Center
45.75000° N, 84.75000° W
Bounds area
226 sq nm
Feature density
3.2555 / sq nm

Chart Statistics

20 largest layers shown

Average features per layer
14.5
Smallest layer
1
Largest layer
124
Area sq km
776
Features per sq km
0.94914
  1. DEPCNT Depth contour 124
  2. DEPARE Depth area 116
  3. SLCONS Shoreline construction 116
  4. COALNE Coastline 51
  5. SBDARE Seabed area 43
  6. UWTROC Underwater rock 27
  7. LIGHTS Light 25
  8. LNDARE Land area 21
  9. OBSTRN Obstruction 21
  10. LNDMRK 19
  11. M_QUAL Data quality 17
  12. LNDRGN Land region 14
  13. WRECKS Wreck 13
  14. BOYLAT Lateral buoy 12
  15. SEAARE Sea area 10
  16. RIVERS River 9
  17. NEWOBJ 8
  18. RECTRC 8
  19. SOUNDG Sounding 8
  20. BUISGL 7

Nearby Chart Cells

Approach usage band

  1. Lake Huron - Straits of Mackinac to Cheboygan River, MI US4MI1NE - about 13 nm away
  2. Lake Michigan - Grays Reef to Sturgeon Bay Point, MI US4MI2NS - about 13 nm away
  3. Burt Lake, Crooked Lake, Pickerel Lake, Round Lake, MI US4MI1MD - about 18 nm away
  4. Lake Huron - St Martin Bay, MI US4MI1OD - about 18 nm away
  5. Lake Huron - Saint Martin Bay to Marquette Island, MI US4MI1OE - about 22 nm away
  6. Lake Michigan - Point Epoufette to Pointe Aux Chenes, MI US4MI2OS - 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
1.5 Dec 17, 2025 metadata.json