Wednesday, August 4, 2021

Barbara Lyn

© Copyright 2017-2021 Michigan Diver LLC or their respective credited artist. 
 All rights reserved.


The Barbara Lyn was originally lost on October 1st, 1990 about 12 miles north of Pte. Aux Barges in a storm.  The tug sunk in about 208 feet of water.  In 2014, a salvage attempt was made on the tug and the tug was successfully raised to the surface.  However, once brought to the surface the tug was grounded off of Port Austin as a storm and bad weather moved in.  The subsequent storm destroyed the pilothouse and re-sunk the tug in 20 ft of water.

Photogrammetry model of the Barbara Lyn as it sits on the bottom of Lake Huron.

Wednesday, July 28, 2021

Mackinaw Design Boat

© Copyright 2017-2021 Michigan Diver LLC or their respective credited artist. 
 All rights reserved.


Mackinaw Design Boat

An example of a typical Mackinaw design boat. (Photo Credit: Robert McGreevy)

Michigan Divers, LLC announces the discovery of a previously unknown shipwreck, near the Grindstone City Harbor.  Captain Cindy Lynch, her husband Captain Mike Lynch and Kevin Jimkoski were scuba diving from shore and discovered the wreck site.  It was initially believed that the wreckage was from the Tug Margaretta, which exploded outside of the Grindstone Harbor in 1907.  On a recent dive, Cindy, Chris Roth, and Kevin further explored the site and it was determined that the wreckage was not from a tugboat but from a small, single-masted sailing vessel.  After consulting with local historian and marine artist, Robert McGreevy, it was determined that the wreckage was likely from a “Mackinaw Boat,” which was common for the area, around the end of the 19th century.  The small sailing vessel was of “double-end design” and had at least one mast, a drop centerboard, and a tiller.  The wreck site lies within the boundaries of the Thumb Bottom Land Preserve and can be found in 8 ft of water, approximately 150’ due east of the end of Grindstone City short point.  People exploring the site can expect to find many small artifacts and several different fish species.  This site should be an excellent local attraction for beginning divers, snorkelers, and kayakers.

Location of the Mackinaw design wreck site.  Located just east (about 200-250ft) off the end of the short point at the Grindstone City marina.

Photogrammetry model of the wreck site.

Divers Cindy Lynch and Kevin Jimkoski pose at the bow of the wreck site.

Remains of the bow.  Notice the metal skeg on the keel.

Another view of the bow remains.

Remains of the stern.

Photomosaic of the keel showing the location of the drop centerboard.

The drop centerboard sits on the ribs at the port side near the bow.

Thursday, July 15, 2021

Jacob Bertschy

© Copyright 2017-2021 Michigan Diver LLC or their respective credited artist. 
 All rights reserved.

JACOB BERTSCHY - 10 Feet Deep.  The Jacob Bertschy was lost in a storm on September 3rd, 1879. It grounded with 51 crew and passengers (everyone was saved) and a cargo of shingles and wheat. The Bertschy was a wooden steamer built in 1867 in Sheboygan, WI, and was 138 feet long.

Drawing of the Jacob Bertschy by Artist Robert McGreevy (

Today the Bertschy sits in only 6-8 feet of water and is a possible shore dive (very long swim) out of Grindstone City Harbor or is reachable by boat for snorkeling or scuba diving.

News articles regarding the loss of the Jacob Bertschy

June 2021
There seems to be very little available or published in terms of a photo of the Jacob Bertschy or images of the wreckage.  Capt'n Cindy decided it was time to change at least the lack of underwater images of the Jacob Bertschy wreck site.  Initially, the wreck site of the Jacob Bertschy was listed as a shore dive from the Grindstone Marina.  As we investigated the location of the wreck site, it was determined that it would be a long swim from shore to the reported location.  Cindy rightfully opted to perform the search with her DiveX Pirahna DPV (Dive Propulsion Vehicle) or commonly called dive scooter. 

Capt'n Cindy with her DiveX Pirahna DPV

Scootering out toward the believed wreck location, Cindy was able to find scattered remains of the vessel indicating she was headed in the right direction.

Scattered pieces of wreckage from the Jacob Bertschy

Continuing the search, additional pieces were found.

Additional wreckage scattered on the lake floor of the Jacob Bertschy

Finally, after additional searching of the area with the DVP, Cindy found the largest piece of the Jacob Bertschy wreckage, the keel.  A photogrammetry model was created from the footage gathered to better understand how the wrecksite looks today.

Photogrammetry model of the wreck site of the Jacob Bertschy as it lies on the bottom of Lake Huron.

After many years on the bottom of Lake Huron, the wind, waves, and have broken up the wreck and scattered the debris across a large bottomland area.  Much of the keel is now buried in the rock and gravel and the wreckage sits embedded and even with the bottom contours.


The Jacob Bertschy wreck site lies within the Thumb Area Bottomland PreserveAs mentioned previously this is probably a site best enjoyed from a boat.  The swim from shore is rather long!

Thursday, October 29, 2020


© Copyright 2017-2020 Michigan Diver LLC or their respective credited artist. 
 All rights reserved.

GLENORCHY - (N43.48.580 W.082.32.721) 100 to 120 Feet Deep.  The Glenorchy is a steel freighter that collided with another ship on October 29th, 1924.  The Glenorchy is 365 feet long and sits "turtle" (upside down) in 120ft of water.  For the properly trained and experienced diver there are penetration opportunities on this wreck.

October 29th, 1924 the steel freighter Glenorchy collided with the Leonard B. Miller in heavy fog on Lake Huron about 6 miles off of of Harbor Beach Michigan. After the impact the Miller came alongside the Glenorchy to take on the crew of the sinking ship. One story from the sinking is that one of the crew members was trapped in his stateroom after the collision. Captain Burke of the Glenorchy realized this as the crew was being transfered to the Miller. Captain Burke then when to the stateroom and used an axe to chop his way into the stateroom and rescue the trapped crewman. Moments after Captain Burke and the crewmen stepped on the deck of the Miller, the Glenorchy turned to its port side, then rolled over and sand to the bottom.

After taking on all 20 crew members, the Miller returned to Port Huron with a badly damaged bow and a large hole in its port side. It was reported that the pumps were barely able to keep up with the incoming water from the damage.

Chris Roth inspecting the prop on the shipwreck Glenorchy

The Glenorchy lies upside down on the lake floor.

Debris lies around the shipwreck Glenorchy.

There are openings in the stern hull that lead to a mangled engine room.  Divers need to take care (and properly trained) if penetrating as there are many entanglement hazards inside the wreck.

The propeller is always an amazing site.  The size of the prop is impressive when compared to the diver next to it (Chris Roth)

Monday, April 27, 2020

E.P. Dorr

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 All rights reserved.

E.P. DORR - (N.44.08.790 W.082.43.960)  175 Feet Deep.  The E.P. Dorr was a wooded tugboat that was built in 1855 in Buffalo, NY.  The Dorr was lost on June 28th,, 1856 when it collided with the Oliver Cromwell.  At the time of its loss, it was carrying salvage parts from other ships including steam pumps, anchors, windlass's, and tools.  Many of these parts not scatter both the shipwreck and the area around the shipwreck.  The Dorr sits upright on the lake bottom and is intact.

A photo mosaic of the deck of the E.P. Dorr in 2018.

Anchor on the bow deck of the E.P. Dorr

Windless on the bow of the E.P.Dorr

A wood stock anchor that had previously been salvaged by the E.P. Dorr before she sank.
A diver explores the stern of the E.P. Dorr
Divers explore the stern of the E.P. Dorr.
The point of impact that sent the E.P. Dorr to the bottom of Lake Huron.
Divers explore the bow of the E.P. Dorr.

A salvaged windless sits on deck that was previously salvaged by the E.P. Dorr.

Here is a photogrammetry model of the E.P. Dorr