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Map of Sport Wreck (Sanilac Shores Underwater Preserve)
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Boat entry

Sport Wreck (Sanilac Shores Underwater Preserve)

Michigan, United States
Open Water suggested8–14 m (25–45 ft) depthBoat entry

Boat dive — see Entry & access.

Sport Wreck (Sanilac Shores Underwater Preserve) at a glance

Sport Wreck (Sanilac Shores Underwater Preserve) is a boat dive site in Michigan, United States with depths of 7.6–13.7 m (25–45 ft). Typically most favorable Sep · from 3 years of archive data. Divers commonly see Round goby, Zebra/quagga mussel, and Yellow perch. Check the latest conditions and entry details before you go.

Favorable window now· until 19:00 · sunset 18:31

Wind forecast for this hour · 16:00 · run 3 h ago
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Tap a factor for its source and model point

Site hazards: Cold thermoclines, boat traffic, entanglement on wreckage

Read the full hazards ↓

Dive windows this week

Sun14:00–19:00 favorable

5 kn wind (5 kn wind)

Mon8:00–19:00 favorable

9 kn wind (9 kn wind)

Tue8:00–19:00 favorable

6 kn wind (6 kn wind)

Wed9:00–19:00 favorable

8 kn wind (8 kn wind)

Thu11:00–18:00 moderate, 18:00–19:00 favorable

14 kn wind (14 kn wind)

Fri9:00–19:00 favorable

11 kn wind (11 kn wind)

Sat9:00–19:00 favorable

4 kn wind (4 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 7:27 · Sunrise 7:56 · Sunset 18:31 · some windows run past sunset

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

Forecast only — always assess conditions on site.

Compare this weekend’s windows near Sport Wreck (Sanilac Shores 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: Round goby, Zebra/quagga mussel, Smallmouth bass
Best time: June-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, 55% of days have historically been favorable, wind has typically been 14 knots
  2. February, 52% of days have historically been favorable, wind has typically been 14 knots
  3. March, 47% of days have historically been favorable, wind has typically been 14 knots
  4. April, 57% 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, 80% of days have historically been favorable, wind has typically been 12 knots
  7. July, 88% of days have historically been favorable, wind has typically been 10 knots
  8. August, 87% of days have historically been favorable, wind has typically been 10 knots
  9. September, 92% of days have historically been favorable, wind has typically been 10 knots, historically most favorable
  10. October, 74% of days have historically been favorable, wind has typically been 12 knots
  11. November, 48% of days have historically been favorable, wind has typically been 14 knots
  12. December, 49% of days have historically been favorable, wind has typically been 14 knots

September 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 July 2026

Site details

The Sport, launched in 1873, was the first steel-hulled tug on the Great Lakes and sank in a December 1920 gale off Lexington; the crew washed ashore alive. Rediscovered in 1987, she rests upright with a slight starboard list in about 45 ft of water roughly three miles off Lexington in the Sanilac Shores Underwater Preserve, rising about 20 ft off the bottom with tools and relics scattered around the site. In 1992 she became the first Michigan shipwreck to receive its own Michigan Historical Marker, and her shallow depth makes her a favorite first Great Lakes wreck dive.

boatwreck

Cold thermoclines, boat traffic, entanglement on wreckage

Reviews

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