West Sand Bay is a remote shoreline on Michipicoten Island, a rugged, largely uninhabited island in the northeastern corner of Lake Superior, Ontario, Canada. The bay sits within one of the most historically dangerous stretches of the Great Lakes — waters that, according to Great Lakes Shipwreck Museum Executive Director Bruce Lynn, hold an estimated 550 shipwrecks in Lake Superior alone and approximately 6,000 across the Great Lakes system. The island itself is difficult to reach and sees little regular traffic, making it an evocative backdrop for a cold-case maritime mystery. Gates and underwater investigator Tom Crossman zeroed in on West Sand Bay and its surrounding waters as a likely resting place for one or more French naval minesweepers lost in the early twentieth century. The investigation was triggered in part by a lighthouse keeper's 1919 report documenting a French naval officer's body found near Quebec Harbour, roughly two miles east of the bay — a grim breadcrumb suggesting wreckage may lie somewhere in these depths.
Lighthouse keeper Charles McDonald documented the discovery of a French naval officer's body near Quebec Harbour on Michipicoten Island, approximately two miles east of West Sand Bay, suggesting a nearby shipwreck.
Reports indicate two additional sailors' bodies allegedly washed ashore in the West Sand Bay area, compounding suspicions that one or more minesweepers sank in nearby Lake Superior waters.
Gates and Tom Crossman conducted sonar surveys and a dive in the waters around West Sand Bay as part of Expedition Unknown Season 12 (S12E05, "Chasing Bonnie and Clyde").
The historical record surrounding West Sand Bay is fragmentary and relies heavily on secondhand reports and a single contemporaneous document — lighthouse keeper Charles McDonald's 1919 account of a body found near Quebec Harbour. That account, roughly two miles east of West Sand Bay, is the closest thing investigators have to a fixed geographic anchor for the wreck search. No confirmed wreck coordinates have been publicly established from available data, and the episode should be understood as an active investigation rather than a resolved one.
Bruce Lynn, Executive Director of the Great Lakes Shipwreck Museum at Whitefish Point, provided Gates with important regional context before the team headed to Michipicoten Island. Lynn noted that Lake Superior alone contains an estimated 550 shipwrecks, with the broader Great Lakes system holding approximately 6,000 — a figure that underscores how routine disappearances were in an era before modern navigation and communication technology. The museum, which has operated an active research vessel since 1978, has located dozens of previously unknown wrecks, illustrating that systematic sonar survey work in these waters does yield results.
The loss of French naval vessels in Lake Superior during the early twentieth century is a relatively obscure chapter of Great Lakes maritime history, and the episode appears to be among the more visible recent efforts to bring attention to it. Whether the minesweepers in question were operating under wartime conditions, involved in training exercises, or engaged in some other mission is not confirmed in the available record, and the episode's hedged framing — searching for, not finding — is the appropriate one.
The waters around Michipicoten Island are deep and cold, conditions that can actually preserve wooden and steel wrecks remarkably well but also make thorough survey work logistically demanding. The episode explores whether the sonar data and dive observations point to a wreck in the West Sand Bay area, but no definitive identification of a minesweeper hull has been confirmed in the publicly available record. The mystery, as of the episode's airing, remains genuinely open.
Lake Superior alone is estimated to contain approximately 550 shipwrecks, according to the Great Lakes Shipwreck Museum at Whitefish Point.
Across all five Great Lakes, the total number of shipwrecks is estimated at around 6,000 — a figure cited by Museum Executive Director Bruce Lynn during Gates' visit.
The Great Lakes Shipwreck Museum has operated an active research vessel since 1978 and has located dozens of previously uncharted wrecks in that time.
Michipicoten Island is largely uninhabited and sits in the northeastern corner of Lake Superior, one of the most historically treacherous stretches of the Great Lakes for shipping.
Michipicoten Island is a provincially protected area and is generally accessible by floatplane or private boat from the Wawa or Michipicoten Harbour area of Ontario, though services are limited and advance planning is essential. West Sand Bay itself is a remote shoreline with no developed visitor infrastructure, so anyone venturing there should be experienced in wilderness travel and fully self-sufficient. Check current provincial park regulations and local advisories before planning a trip, as access conditions can change.
Wawa, Ontario, is the nearest community of any size, located approximately 50–60 kilometers from Michipicoten Harbour, which serves as the primary jumping-off point for the island.
Summer months — roughly June through early September — offer the most navigable weather on Lake Superior, though conditions can shift rapidly even in peak season. Early autumn can bring dramatic scenery but also the unpredictable storms that have claimed so many vessels in these waters.
Lake Superior
Lake Superior is the body of water directly surrounding the West Sand Bay investigation site and the broader context for the French minesweeper wreck search.
Lake Michigan
Lake Michigan is another Great Lakes investigation location that shares the same regional maritime mystery tradition Gates explored throughout the Great Lakes region.
Lake Champlain
Lake Champlain represents a similar pattern of Gates investigating cold-case maritime mysteries in large North American freshwater lakes with historically murky shipwreck records.