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Map of Grape Shot Wreck
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Boat entry

Grape Shot Wreck

Wisconsin, United States
Open Water suggested2 m (8 ft) depthBoat entry

Boat dive — see Entry & access.

Grape Shot Wreck at a glance

Grape Shot Wreck is a boat dive site in Wisconsin, United States with depths of 1.5–2.4 m (5–8 ft). Typically most favorable Jul · from 3 years of archive data. Divers commonly see Smallmouth bass. Check the latest conditions and entry details before you go.

No window today· next: tomorrow 8:00–18:00 · favorable & moderate

Wind forecast for this hour · 23:00 · run 10 h ago
—

Tap a factor for its source and model point

Site hazards: Rapidly building seas around Plum Island · Very shallow rocky bottom · Boat traffic through the passage

All 4 hazards ↓

Dive windows this week

SunNo window

7 kn wind (7 kn wind)

Mon8:00–9:00 favorable, 9:00–10:00 moderate, 10:00–18:00 favorable

12 kn wind (12 kn wind)

Tue8:00–18:00 favorable

7 kn wind (7 kn wind)

Wed8:00–12:00 moderate, 12:00–18:00 favorable

11 kn wind (11 kn wind)

Thu8:00–18:00 favorable

5 kn wind (5 kn wind)

Fri8:00–18:00 favorable

6 kn wind (6 kn wind)

Sat8:00–18:00 favorable

5 kn wind (5 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 6:47 · Sunrise 7:17 · Sunset 17:45 · some windows run past sunset

Source: Open-Meteo wind · updated 25 Oct, 12:22 GMT-5

Forecast only — always assess conditions on site.

Compare this weekend’s windows near Grape Shot Wreck

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: June-September, calm days only

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, 14% of days have historically been favorable, wind has typically been 20 knots
  2. February, 12% of days have historically been favorable, wind has typically been 20 knots
  3. March, 11% of days have historically been favorable, wind has typically been 20 knots
  4. April, 16% of days have historically been favorable, wind has typically been 20 knots
  5. May, 24% of days have historically been favorable, wind has typically been 17 knots
  6. June, 22% of days have historically been favorable, wind has typically been 17 knots
  7. July, 35% of days have historically been favorable, wind has typically been 16 knots, historically most favorable
  8. August, 31% of days have historically been favorable, wind has typically been 16 knots
  9. September, 29% of days have historically been favorable, wind has typically been 17 knots
  10. October, 6% of days have historically been favorable, wind has typically been 20 knots
  11. November, 7% of days have historically been favorable, wind has typically been 21 knots
  12. December, 11% of days have historically been favorable, wind has typically been 21 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 schooner Grape Shot, built in Buffalo in 1855 with an eagle figurehead, grounded on the north side of Plum Island in a November 1867 gale. Its scattered remains lie in about 8 ft of water on rock and sand 0.18 miles northwest of the Plum Island U.S. Coast Guard station in the Death's Door passage. A shallow boat/kayak dive and snorkel best done in calm weather given the passage's notorious currents.

boatwreck

Strong, unpredictable currents in Death's Door passage

Rapidly building seas around Plum Island

Very shallow rocky bottom — surge over the wreck

Boat traffic through the passage

Reviews

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