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Map of SS Pewabic Wreck
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ExpertBoat entry

SS Pewabic Wreck

Michigan, United States
Depth (deck 155 ft, bottom ~165 ft)47–51 m (154–167 ft) depthBoat entry

Boat dive — see Entry & access.

SS Pewabic Wreck at a glance

SS Pewabic Wreck is an expert boat dive site in Michigan, United States with depths of 47–51 m (154–167 ft). Typically most favorable Jul · from 3 years of archive data. Divers commonly see Round goby, Burbot, and Quagga mussel. Check the latest conditions and entry details before you go.

Next window today· 9:00–19:00 · favorable & moderate · sunset 18:31

Wind forecast for this hour · 7:00 · run 18 h ago
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Tap a factor for its source and model point

Site hazards: Depth (deck 155 ft, bottom ~165 ft) · Very cold, dark water below the thermocline · Mass-casualty site (75-100 victims)

All 4 hazards ↓

Dive windows this week

Lightest wind: Thu
Sun9:00–13:00 moderate, 13:00–17:00 favorable, 17:00–19:00 moderate

13 kn wind (13 kn wind)

Mon9:00–19:00 favorable

13 kn wind (13 kn wind)

Tue9:00–19:00 favorable

12 kn wind (12 kn wind)

Wed10:00–12:00 moderate, 13:00–19:00 moderate

18 kn wind (18 kn wind)

Thu9:00–10:00 moderate, 10:00–19:00 favorable

10 kn wind (10 kn wind)

Fri9:00–13:00 moderate, 13:00–19:00 favorable

13 kn wind (13 kn wind)

SatNot in the forecast yet

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 7:31 · Sunrise 8:01 · Sunset 18:31 · some windows run past sunset

Source: Open-Meteo wind · updated 24 Oct, 13:20 GMT-4

Forecast only — always assess conditions on site.

Compare this weekend’s windows near SS Pewabic Wreck

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, Quagga mussel
Best time: June-September; cold clear water gives the best visibility.

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, 12% of days have historically been favorable, wind has typically been 21 knots
  2. February, 11% of days have historically been favorable, wind has typically been 22 knots
  3. March, 6% of days have historically been favorable, wind has typically been 21 knots
  4. April, 14% of days have historically been favorable, wind has typically been 20 knots
  5. May, 32% of days have historically been favorable, wind has typically been 15 knots
  6. June, 31% of days have historically been favorable, wind has typically been 16 knots
  7. July, 43% of days have historically been favorable, wind has typically been 14 knots, historically most favorable
  8. August, 29% of days have historically been favorable, wind has typically been 16 knots
  9. September, 40% of days have historically been favorable, wind has typically been 15 knots
  10. October, 11% of days have historically been favorable, wind has typically been 20 knots
  11. November, 2% of days have historically been favorable, wind has typically been 23 knots
  12. December, 9% of days have historically been favorable, wind has typically been 22 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 sidewheel steamer Pewabic sank within minutes on August 9, 1865 after turning into the path of her sister ship Meteor off Thunder Bay, killing between 75 and 100 people — one of the Great Lakes' worst disasters. Salvagers recovered most of her copper cargo by 1917, wrecking the cabins but leaving the 200-ft hull upright and largely intact with its deck at 155 ft and the bottom at about 165 ft. Today she is a classic entry-level technical dive in the Thunder Bay National Marine Sanctuary, sobering both for her history and for the divers lost on her over the years.

boatwreck

Depth (deck 155 ft, bottom ~165 ft) — decompression dive; at least 10 divers have died on this wreck historically

Very cold, dark water below the thermocline

Salvage-damaged cabins leave jagged structure and entanglement points

Mass-casualty site (75-100 victims) — human remains have been encountered; treat with respect

Reviews

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