NOAA S-57 chart cell

Saint Marys River

US4MI1PF

Usage band
Approach · code 4
Current edition
2.14
Features
2,260
S-57 layers
52
Published
Mar 18, 2026
Manifest updated
Jun 22, 2026, 2:51 PM UTC

Coverage

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North
46.50000° N
South
46.20000° N
West
84.30000° W
East
84.00000° W
Center
46.35000° N, 84.15000° W
Bounds area
224 sq nm
Feature density
10.0918 / sq nm

Chart Statistics

20 largest layers shown

Average features per layer
43.5
Smallest layer
1
Largest layer
340
Area sq km
768
Features per sq km
2.94231
  1. DEPCNT Depth contour 340
  2. DEPARE Depth area 308
  3. COALNE Coastline 232
  4. BOYLAT Lateral buoy 186
  5. LIGHTS Light 156
  6. UWTROC Underwater rock 120
  7. OBSTRN Obstruction 107
  8. LNDRGN Land region 94
  9. LNDARE Land area 90
  10. CTRPNT 73
  11. DAYMAR 72
  12. BCNSPP Special purpose beacon 49
  13. WEDKLP 42
  14. SBDARE Seabed area 41
  15. RIVERS River 34
  16. SLCONS Shoreline construction 33
  17. BCNLAT Lateral beacon 26
  18. M_QUAL Data quality 26
  19. NAVLNE 25
  20. C_AGGR 24

Nearby Chart Cells

Approach usage band

  1. Saint Marys River US4MI1PE - about 12 nm away
  2. Saint Marys River US4MI2QV - about 18 nm away
  3. Lake Huron - Saint Mary's River, Entrance to Munuscong Lake, MI US4MI1OF - about 18 nm away
  4. Saint Marys River US4MI2QU - about 22 nm away
  5. Lake Huron - Saint Martin Bay to Marquette Island, MI US4MI1OE - about 22 nm away
  6. Lake Huron - Entrance to Saint Mary's River, Drummond Island, MI US4MI1OG - 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
2.14 Mar 18, 2026 metadata.json