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Map of SS R.J. Hackett Wreck
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Boat entry

SS R.J. Hackett Wreck

Wisconsin, United States
Open Water suggestedMid-bay location 10 miles from Chambers Island3–4 m (10–13 ft) depthBoat entry

Boat dive — see Entry & access.

SS R.J. Hackett Wreck at a glance

SS R.J. Hackett Wreck is a boat dive site in Wisconsin, United States with depths of 3–4 m (10–13 ft). Typically most favorable Jul · from 3 years of archive data. Divers commonly see Round goby and Smallmouth bass. Check the latest conditions and entry details before you go.

Next window today· 14:00–15:00 · moderate

Wind forecast for this hour · 3:00 · run 3 h ago
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Tap a factor for its source and model point

Site hazards: Mid-bay location 10 miles from Chambers Island · Rapidly changing Green Bay weather

All 3 hazards ↓

Dive windows this week

Lightest wind: Thu
Sat14:00–15:00 moderate

16 kn wind (16 kn wind)

Sun8:00–11:00 moderate, 11:00–18:00 favorable

9 kn wind (9 kn wind)

Mon8:00–18:00 favorable

9 kn wind (9 kn wind)

Tue8:00–18:00 favorable

9 kn wind (9 kn wind)

Wed8:00–15:00 moderate

13 kn wind (13 kn wind)

Thu8:00–18:00 favorable

4 kn wind (4 kn wind)

Fri8:00–18:00 favorable

9 kn wind (9 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 17:48 · some windows run past sunset

Source: Open-Meteo wind · updated 24 Oct, 00:21 GMT-5

Forecast only — always assess conditions on site.

Compare this weekend’s windows near SS R.J. Hackett 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: Calm summer days; Green Bay chop builds quickly.

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 R.J. Hackett (1869) is widely credited as the first purpose-built Great Lakes bulk freighter, the design that defined lake shipping for a century. She burned to the waterline on Whaleback Shoal in November 1905 while carrying coal and now lies broken in 10-14 feet of water 10 miles northeast of Chambers Island in Green Bay. Her steeple engine, boiler, shaft, propeller and remnant coal cargo make a fascinating shallow dive or snorkel for boaters.

boatwreck

Mid-bay location 10 miles from Chambers Island — long boat run

Shoal water and broken machinery near the surface

Rapidly changing Green Bay weather

Reviews

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