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Map of Smith Moore Wreck (Alger Underwater Preserve)
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Smith Moore Wreck (Alger Underwater Preserve)

Michigan, United States
AOW suggested21–32 m (70–105 ft) depthBoat entry

Boat dive — see Entry & access.

Smith Moore Wreck (Alger Underwater Preserve) at a glance

Smith Moore Wreck (Alger Underwater Preserve) is an advanced boat dive site in Michigan, United States with depths of 21.3–32 m (70–105 ft). Typically most favorable Jul · from 3 years of archive data. Divers commonly see Lake trout, Coho salmon, and Burbot. Check the latest conditions and entry details before you go.

Favorable window now· until 19:00 · sunset 18:42

Wind forecast for this hour · 18:00 · run 5 h ago
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Tap a factor for its source and model point

Site hazards: Depth (deco risk), very cold water at depth (~40 F), low light, silt inside hull, entanglement; penetration only for wreck-trained divers

Read the full hazards ↓

Dive windows this week

Sun14:00–19:00 favorable

5 kn wind (5 kn wind)

Mon9:00–19:00 favorable

11 kn wind (11 kn wind)

Tue9:00–17:00 favorable, 17:00–19:00 moderate

7 kn wind (7 kn wind)

Wed13:00–18:00 moderate

11 kn wind (11 kn wind)

Thu9:00–19:00 favorable

7 kn wind (7 kn wind)

Fri9:00–19:00 favorable

6 kn wind (6 kn wind)

Sat9:00–19:00 favorable

5 kn wind (5 kn wind)

Favorable windowModerate window— no window

Every forecast dive window each day, site-local time, from wind forecasts. Numbers under each bar are daylight averages.

First light 7:47 · Sunrise 8:18 · Sunset 18:42 · some windows run past sunset

Source: Open-Meteo wind · updated 25 Oct, 13:19 GMT-4

Forecast only — always assess conditions on site.

Compare this weekend’s windows near Smith Moore Wreck (Alger Underwater Preserve)

Forecast · NOAA tide model

Tide & slack timing

Loading tide predictions

Recent diver reports

Dated firsthand observations from divers — not current conditions.

No diver reports for this site yet. — one dated observation helps every diver after you.

Dived here today — did the forecast match?

What Divers Say

Known for: Lake trout, Burbot
Best time: July-September

Based on community reviews and site data. Conditions vary — always verify before diving.

Best months, historically

What conditions have historically been typical at this site, month by month — not a forecast.

  1. January, 52% of days have historically been favorable, wind has typically been 14 knots
  2. February, 39% of days have historically been favorable, wind has typically been 15 knots
  3. March, 53% of days have historically been favorable, wind has typically been 15 knots
  4. April, 51% of days have historically been favorable, wind has typically been 14 knots
  5. May, 73% of days have historically been favorable, wind has typically been 12 knots
  6. June, 71% of days have historically been favorable, wind has typically been 11 knots
  7. July, 90% of days have historically been favorable, wind has typically been 10 knots, historically most favorable
  8. August, 81% of days have historically been favorable, wind has typically been 11 knots
  9. September, 82% of days have historically been favorable, wind has typically been 11 knots
  10. October, 43% of days have historically been favorable, wind has typically been 15 knots
  11. November, 37% of days have historically been favorable, wind has typically been 16 knots
  12. December, 43% of days have historically been favorable, wind has typically been 16 knots

July has typically had the largest share of favorable days here. Conditions vary year to year — this is historical context, not a forecast.

Based on 3 years of archive data. Bar height shows the share of days each month whose conditions have historically scored favorably.

Marine life seen at this site

Species noted at this site — not a promise of what you’ll encounter.

Species seen here

Rough labels: “Commonly seen” usually means two or more recorded sightings near this site in public dive logs (GBIF), “Occasionally seen” one; “Seasonal” and “Rarely seen” come from dive-guide research. Not a measured rate.

Fills & rentals nearby

No dive shops mapped within 25 km (16 mi). Know one? Add it to the map.

Data updated June 2026

Site details

The Smith Moore was a 230-ft wooden steam barge that sank in 1889 in the East Channel between Grand Island and the mainland after a collision, and is the deepest and best-known wreck in the Alger Underwater Preserve near Munising. She sits upright and largely intact in 70-105 ft of water with the deck reached around 80 ft. Divers find her boiler, engine, deck winch and broken mast, and open hatches allow trained divers a look into the holds.

boatwreck

Depth (deco risk), very cold water at depth (~40 F), low light, silt inside hull, entanglement; penetration only for wreck-trained divers

Reviews

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