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Map of Francisco Morazan Wreck (Manitou Passage Underwater Preserve)
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Francisco Morazan Wreck (Manitou Passage Underwater Preserve)

Michigan, United StatesDirections
Open Water suggested0–5 m (0–15 ft) depthBoth entry

Francisco Morazan Wreck (Manitou Passage Underwater Preserve) at a glance

Francisco Morazan Wreck (Manitou Passage Underwater Preserve) is a both dive site in Michigan, United States with depths of 0–4.6 m (0–15 ft). Typically most favorable Sep · from 3 years of archive data. Divers commonly see Round goby, Smallmouth bass, and Crayfish. Check the latest conditions and entry details before you go.

Moderate window now· until 10:00, then favorable until 19:00 · sunset 18:41

Wind forecast for this hour · 9:00 · run 7 h ago
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Tap a factor for its source and model point

Site hazards: Jagged collapsing steel that can cut divers or snag gear, surge and waves on the exposed south shore, cold water, remote location with no emergency services on island

Read the full hazards ↓

Dive windows this week

Lightest wind: Sun
Mon9:00–10:00 moderate, 10:00–19:00 favorable

12 kn wind (12 kn wind)

Tue9:00–19:00 favorable

9 kn wind (9 kn wind)

Wed9:00–11:00 moderate, 11:00–16:00 favorable, 16:00–19:00 moderate

14 kn wind (14 kn wind)

Thu12:00–14:00 moderate, 14:00–19:00 favorable

13 kn wind (13 kn wind)

Fri9:00–10:00 moderate, 11:00–19:00 moderate

17 kn wind (17 kn wind)

Sat9:00–19:00 favorable

10 kn wind (10 kn wind)

Sun9:00–19:00 favorable

8 kn wind (8 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 7:45 · Sunrise 8:15 · Sunset 18:41 · some windows run past sunset

Source: Open-Meteo wind · updated 26 Oct, 01:24 GMT-4

Forecast only — always assess conditions on site.

Compare this weekend’s windows near Francisco Morazan Wreck (Manitou Passage Underwater Preserve)

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, Smallmouth bass, Crayfish
Best time: Calm days July-August

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, 53% of days have historically been favorable, wind has typically been 14 knots
  2. February, 44% of days have historically been favorable, wind has typically been 15 knots
  3. March, 52% of days have historically been favorable, wind has typically been 14 knots
  4. April, 52% of days have historically been favorable, wind has typically been 14 knots
  5. May, 80% of days have historically been favorable, wind has typically been 11 knots
  6. June, 73% of days have historically been favorable, wind has typically been 11 knots
  7. July, 86% of days have historically been favorable, wind has typically been 11 knots
  8. August, 81% of days have historically been favorable, wind has typically been 11 knots
  9. September, 88% of days have historically been favorable, wind has typically been 11 knots, historically most favorable
  10. October, 54% of days have historically been favorable, wind has typically been 14 knots
  11. November, 34% of days have historically been favorable, wind has typically been 16 knots
  12. December, 44% of days have historically been favorable, wind has typically been 15 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 Francisco Morazan is a 246-ft steel package freighter that ran aground in a November 1960 snowstorm about 300 yards off the south shore of South Manitou Island, partly atop the older wreck of the Walter L. Frost. Part of the superstructure still breaks the surface, making it the most visible wreck in the Manitou Passage Underwater Preserve, snorkelable and divable in roughly 0-15 ft of water within Sleeping Bear Dunes National Lakeshore. Strong swimmers reach it from the island beach; most visitors come by kayak or boat, and the collapsing steel demands care.

boatshorewreck

Jagged collapsing steel that can cut divers or snag gear, surge and waves on the exposed south shore, cold water, remote location with no emergency services on island

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