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Map of Gallinipper Wreck
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ExpertBoat entry

Gallinipper Wreck

Wisconsin, United States
Technical depth (200-215 ft)61–66 m depthBoat entry

Boat dive — see Entry & access.

Gallinipper Wreck at a glance

Gallinipper Wreck is an expert boat dive site in Wisconsin, United States with depths of 61–66 m (200–216 ft). Typically most favorable Jul · from 3 years of archive data. Divers commonly see Burbot. Check the latest conditions and entry details before you go.

Wind model · graded 2h ago
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Tap a factor for its source and model point

Site hazards: Technical depth (200-215 ft) · Very cold water at depth (~39-42°F) · Dark conditions

All 5 hazards ↓

Dive windows this week

Best: Sat
Fri13:00–15:00
Sat19:00–20:00
Sun7:00–20:00
Mon7:00–19:00
Tue13:00–20:00
Wed8:00–15:00
Thu7:00–14:00

Favorable windowModerate window— no window

First light 5:56 · Sunrise 6:26 · Sunset 19:08

Source: Open-Meteo wind · graded 2h ago

Forecast only — always assess conditions on site.

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: July-September, settled weather windows

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. Jan19% 20 kn
  2. Feb11% 20 kn
  3. Mar15% 20 kn
  4. Apr17% 20 kn
  5. May33% 16 kn
  6. Jun27% 16 kn
  7. Jul44% 15 kn
  8. Aug39% 16 kn
  9. Sep40% 15 kn
  10. Oct6% 20 kn
  11. Nov11% 20 kn
  12. Dec11% 20 kn

July hastypically 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

Fills & rentals nearby

No dive shops mapped within 25 km. Know one? Add it to the map.

Data updated June 2026

Site details

The 95-ft schooner Gallinipper (built 1833) capsized in a squall on July 7, 1851, and is the oldest shipwreck yet found in Wisconsin waters. It sits upright and remarkably intact in 215 ft of water (deck at ~200 ft) roughly 8-10 nautical miles off the coast between Manitowoc and Sheboygan, with carved bow, bowsprit and both wood-stock anchors in place. A cold, dark trimix dive for experienced technical divers only; listed on the National Register in 2010.

boatwreck

Technical depth (200-215 ft) — trimix decompression dive only

Very cold water at depth (~39-42°F)

Dark conditions

Long offshore boat run; rapidly changing lake weather

Fragile 1833-built structure — no contact

Reviews

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