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Map of Hesper Wreck
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Both

Hesper Wreck

Minnesota, United StatesDirections
Open Water suggested5–15 m (16–49 ft) depthBoth entry

Hesper Wreck at a glance

Hesper Wreck is a both dive site in Minnesota, United States with depths of 5–15 m (16–49 ft). Typically most favorable Jul · from 3 years of archive data. Divers commonly see Lake trout, Crayfish, and Burbot. Check the latest conditions and entry details before you go.

Moderate window now· until 19:00 · sunset 18:01

Wind forecast for this hour · 17:00 · run 4 h ago
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Tap a factor for its source and model point

Site hazards: Boat traffic from Silver Bay marina · Scattered wreckage and timbers with snag points · Waves breaking over the breakwall in wind

All 4 hazards ↓

Dive windows this week

Sat14:00–19:00 moderate

8 kn wind (8 kn wind)

Sun8:00–10:00 favorable, 10:00–18:00 moderate

6 kn wind (6 kn wind)

Mon8:00–18:00 favorable

7 kn wind (7 kn wind)

Tue8:00–18:00 moderate

13 kn wind (13 kn wind)

Wed8:00–11:00 favorable, 11:00–14:00 moderate

8 kn wind (8 kn wind)

Thu8:00–10:00 moderate, 10:00–12:00 favorable, 12:00–15:00 moderate, 15:00–18:00 favorable

7 kn wind (7 kn wind)

Fri8:00–17:00 favorable, 17:00–18:00 moderate

9 kn wind (9 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 7:05 · Sunrise 7:36 · Sunset 18:01 · some windows run past sunset

Source: Open-Meteo wind · updated 24 Oct, 12:17 GMT-5

Forecast only — always assess conditions on site.

Compare this weekend’s windows near Hesper Wreck

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

Best time: June-September, calm days; Lake Superior visibility is often best in early summer and fall.

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, 85% of days have historically been favorable, wind has typically been 11 knots
  2. February, 79% of days have historically been favorable, wind has typically been 12 knots
  3. March, 73% of days have historically been favorable, wind has typically been 11 knots
  4. April, 72% of days have historically been favorable, wind has typically been 12 knots
  5. May, 84% of days have historically been favorable, wind has typically been 11 knots
  6. June, 86% of days have historically been favorable, wind has typically been 10 knots
  7. July, 99% of days have historically been favorable, wind has typically been 9 knots, historically most favorable
  8. August, 92% of days have historically been favorable, wind has typically been 9 knots
  9. September, 92% of days have historically been favorable, wind has typically been 10 knots
  10. October, 83% of days have historically been favorable, wind has typically been 11 knots
  11. November, 74% of days have historically been favorable, wind has typically been 12 knots
  12. December, 75% of days have historically been favorable, wind has typically been 12 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 July 2026

Site details

The Hesper was a 250-foot wooden bulk freighter that sank in a May 1905 storm and now lies broken alongside the west breakwater of Silver Bay's marina in roughly 15-50 feet of water. Two main hull sections with scattered timbers, framing and machinery make it one of Minnesota's most accessible Lake Superior wrecks, divable from shore off the breakwall or from a boat using the GLSPS mooring. Its shallow depth and easy navigation make it a favorite first Lake Superior wreck, provided divers are equipped for very cold fresh water.

boatshorewreck

Cold water (drysuit or thick wetsuit required year-round)

Boat traffic from Silver Bay marina

Scattered wreckage and timbers with snag points

Waves breaking over the breakwall in wind

Reviews

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