Huskies Help Solve Sunken Minesweeper Mystery

By Cyndi Perkins | Published

Underwater robots, side-scan sonar and crowdfunding are being deployed to find two of Lake Superior's most elusive historical shipwrecks.

On Nov. 23, 1918, two 143-foot French minesweepers went down in a Lake Superior storm. Michigan Technological University's Great Lakes Research Center Director Guy Meadows is at the helm of a crowd-funded project to find the Cerisoles and Inkerman. Meadows shares the historical research and advanced technologies that will guide the mission at a talk from 5:30 to 7 p.m. Tuesday, Nov. 13, at the Great Lakes Research Center, in Room 202.

It's not the first time anyone's gone looking for the ships since they went missing. Why does Meadows think his odds are better?

"I'm a big fan of homework, so I have tried to look at the loss with fresh eyes."Guy Meadows, Great Lakes Research Center

"I have some ideas about the detailed events, what the Lake Superior weather was and what implication the weather had on how the ships may have ended up foundering," he says.

map of lake superior indicating Thunder Bay, Keweenaw Peninsula, and three ships, the Cerisoles, Inkerman and Sebastapole on a path marked with dotted lines and arrows pointing east with a circle indicating where the vessels were last seen.
The path of the minesweepers in November 1918. The Cerisoles and Inkerman were last seen off the tip of the Keweenaw Peninsula, in Michigan's Upper Peninsula. The Sebastapol weathered the storm.

The 630-ton steel-hulled vessels were built near present-day Thunder Bay, Ontario and last seen off Keweenaw Point in Michigan's Upper Peninsula. The combined crew of 79, including one Canadian Great Lakes pilot on each ship in addition to the French sailors, represents the largest loss of life in Lake Superior maritime history.

Newly built and outfitted minesweepers at the dock in a black and white photo from 1918 in a harbor on lake superior
Canadian Car & Foundry Co. Limited built 12 minesweepers for the French government. From the date indicated, Nov. 12, 1918,  it's possible that two of the vessels at the dock are the Cerisoles and Inkerman. (All historical photos from City of Thunder Bay Archives)

Their first voyage was the last.

The final of 12 World War I minesweepers commissioned by the French government, the Cerisoles and Inkerman, named for French military victories, were traveling in company on their maiden voyage with a third ship, the Sebastapol. The flotilla, bound for Europe via the Soo Locks and St. Lawrence Seaway, was hit with a fierce storm about midway between Thunder Bay and Isle Royale. The Sebastapol and her crew, though badly shaken, survived the maelstrom. Assuming the other two vessels had sheltered in the lee of the Keweenaw Peninsula, in Bete Grise, the captain of the expedition was reportedly surprised to see the bay empty but continued on after the storm abated, assuming the Cerisoles and Inkerman were ahead, or would catch up. No distress calls were received; wireless communication was a relatively new invention in 1918. 

The deck of a boat with a mounted gun and lake superior in the background, black and white circa 1918 from City of Thunder Bay archives
A gun's-eye view from the deck of one of the minesweepers.

Michigan Tech is known for underwater imaging and mobility. 

The project came to the University via Tom Farnquist, director emeritus of the Great Lakes Shipwreck Historical Society, based out of Whitefish Point and Sault Ste. Marie, Michigan.

"He saw some of the advanced work we've been doing," Meadows says. "That group has been looking for these vessels for a number of years, the last several summers at least three weeks, if not longer, out of Copper Harbor."  

Farnquist shared his notebook on the project with Meadows, who added his own research to it. "I became really intrigued with the history," he says.  

With expertise that includes 25 years of experience in the ship design department at his previous university, Meadows  is confident, but also pragmatic. "I understand some of the issues with the way these ships were designed and how they would behave in large sea states," he says.

"But there's no guarantee we're going to be successful, either. This is really a hard search. Average depths are 500 to 1,000 feet. There's lots of false targets because of the shape of the lake bottom, and the geology of our Keweenaw Peninsula."

The search will be multi-layered. And the team is asking Huskies and others interested in Great Lakes shipwrecks and history to participate in the adventure by helping to fund it.  

The game plan capitalizes on technology. 
 

Play Pilothouse video clip video
Preview image for Pilothouse video clip video

The implications of the Great Lakes Research Center's advanced technology? Nearly every scouting trip yields new discoveries. This is footage of the intact pilothouse of a shipwreck located in summer 2018. 

The University research vessel, the Agassiz, will station out of Copper Harbor for the search, where there's immediate access to the big lake.

 "We cannot afford to make a huge effort, so we have some areas identified based on our research that we want to go take a quick look at and see if we get lucky," says Meadows. 

First, the team will do a wide-area search with conventional side-scan sonar, at high resolution. "If the targets look promising, we have the technology to go in and take a really close look with our autonomous underwater vehicle, like we did for the folks at the Thunder Bay National Marine Sanctuary in Alpena a couple summers ago," says Meadows. "We  got some really spectacular sonar images."

"The final step of the strategy is to go in with our remotely operated vehicles and read the name off the back of the boats, if we should be so fortunate."Guy Meadows, Great Lakes Research Center

Meadows says the team could end up being just as disappointed as other searchers.

"We certainly have the ability to accomplish all that. But it's going to be very difficult. The targets will appear very tiny from near the surface. There will be lots of other things that aren't the real targets," he says.

But there's also reason for optimism. Given the current capabilities, researchers and students are finding never-before-seen targets nearly every time they go out on the water. Meadows is excited about expanding the potential for underwater discovery.    

"We have long-range plans to be one of the first universities to acquire and operate a fully autonomous surface vessel (ASV) that has a sonar to die for. That's a game changer," he says. "An unmanned vessel can operate 24-hours a day and do wide-area searches the way they need to be done." 

Michigan Technological University is a public research university, home to more than 7,000 students from 54 countries. Founded in 1885, the University offers more than 120 undergraduate and graduate degree programs in science and technology, engineering, forestry, business and economics, health professions, humanities, mathematics, and social sciences. Our campus in Michigan’s Upper Peninsula overlooks the Keweenaw Waterway and is just a few miles from Lake Superior.