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May Flower (shipwreck)

Minnesota, United States
AOW suggested24–27 m (79–89 ft) depthBoat entry

Boat dive — see Entry & access.

May Flower (shipwreck) at a glance

May Flower (shipwreck) is an advanced boat dive site in Minnesota, United States with depths of 24–27 m (79–89 ft). Typically most favorable Jul · from 3 years of archive data. Divers commonly see Burbot and Lake trout. Check the latest conditions and entry details before you go.

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

Wind forecast for this hour · 15:00 · run 3 h ago
—

Tap a factor for its source and model point

Site hazards: Very cold water at 90 ft · Proximity to the busy Duluth shipping lane · Open-lake exposure to weather

All 4 hazards ↓

Dive windows this week

Mon13:00–19:00 favorable

8 kn wind (8 kn wind)

Tue8:00–9:00 moderate, 9:00–10:00 favorable, 10:00–13:00 moderate, 13:00–18:00 favorable

13 kn wind (13 kn wind)

Wed8:00–18:00 favorable

2 kn wind (2 kn wind)

Thu8:00–11:00 moderate, 11:00–18:00 favorable

9 kn wind (9 kn wind)

Fri8:00–18:00 favorable

2 kn wind (2 kn wind)

Sat8:00–18:00 favorable

10 kn wind (10 kn wind)

Sun8:00–18:00 favorable

3 kn wind (3 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 7:10 · Sunrise 7:41 · Sunset 18:01 · some windows run past sunset

Source: Open-Meteo wind · updated 26 Oct, 12:27 GMT-5

Forecast only — always assess conditions on site.

Compare this weekend’s windows near May Flower (shipwreck)

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

Best time: Autumn typically has the best visibility; June-October season.

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, 87% of days have historically been favorable, wind has typically been 10 knots
  2. February, 86% of days have historically been favorable, wind has typically been 11 knots
  3. March, 84% of days have historically been favorable, wind has typically been 11 knots
  4. April, 80% of days have historically been favorable, wind has typically been 11 knots
  5. May, 88% of days have historically been favorable, wind has typically been 10 knots
  6. June, 92% of days have historically been favorable, wind has typically been 9 knots
  7. July, 99% of days have historically been favorable, wind has typically been 8 knots, historically most favorable
  8. August, 96% of days have historically been favorable, wind has typically been 9 knots
  9. September, 93% of days have historically been favorable, wind has typically been 9 knots
  10. October, 96% of days have historically been favorable, wind has typically been 10 knots
  11. November, 82% of days have historically been favorable, wind has typically been 11 knots
  12. December, 78% of days have historically been favorable, wind has typically been 11 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

Facts from OpenStreetMap, corrected by the community — listed by distance only. Details change; confirm with the shop.

  • Lake Superior Divers Supply and School11 km (7 mi)

    Report a fix

Shop facts come from OpenStreetMap and community corrections, shown nearest first. PickADive lists facts and contacts only — no listing is sponsored or ranked.

Data updated June 2026

Site details

The May Flower was a 147-foot wooden scow-schooner that capsized and sank on June 2, 1891 while carrying sandstone blocks, drowning two of her crew. Found in 1991, she lies in about 90 feet of water roughly four miles east of the Duluth harbor entry near the Lester River, with an intact bow and stern, two kedge anchors and Minnesota's only known manual ratcheted windlass of its type; the midsection is broken and sand-buried. It is a boat-only dive with typically modest visibility, best in autumn, and was listed on the National Register of Historic Places in 2012.

boatwreck

Low visibility (often 10-15 ft) due to Lester River outflow

Very cold water at 90 ft

Proximity to the busy Duluth shipping lane — flag/boat cover essential

Open-lake exposure to weather

Reviews

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