Boat dive — see Entry & access.
Gallinipper Wreck is a 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.
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: FriFavorable windowModerate window— no window
First light 5:00 · Sunrise 5:33 · Sunset 20:20
Source: Open-Meteo wind · graded 3h ago
Forecast only — always assess conditions on site.
Dated firsthand observations from divers — not current conditions.
No diver reports for this site yet. — one dated observation helps every diver after you.
Based on community reviews and site data. Conditions vary — always verify before diving.
What conditions have historically been typical at this site, month by month — not a forecast.
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.
Species noted at this site — not a promise of what you’ll encounter.
No dive shops mapped within 25 km. Know one? Add it to the map.
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.
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
Gallinipper Wreck is rated as expert difficulty, which may not suit new divers. A Technical trimix / normoxic trimix certification certification or equivalent is suggested. Consider your experience level, conditions, and local guidance before planning.
Gallinipper Wreck has a depth range of 61–66 metres (200–216 feet). Check the dive site page for current conditions and any depth-specific guidance before planning your dive.
The best time to dive Gallinipper Wreck is typically July-September, settled weather windows. Conditions vary, so check the latest reports and forecasts on the dive site page before your trip.
Divers at Gallinipper Wreck in United States commonly report sightings of Burbot. Marine life varies by season and conditions—check the site page for recent diver observations and photos.
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