Two hundred ships rest beneath Lake Huron's freshwater, preserved by the cold for over a century.
A narrow gap of Lake Huron where the Great Lakes trade boom, the storms it ignored, and the cold freshwater that preserved its losses converge into one of the richest underwater archaeological landscapes in the Americas. This is the story in three arcs.
Long before the trade boom, the waters now within the sanctuary were the deep heart of Anishinaabewi-gichigami — the Anishinaabe Sea. The Saginaw Chippewa Indian Tribe, the Sault Ste. Marie Tribe of Chippewa Indians, the Bay Mills Indian Community, and the Little Traverse Bay Bands of Odawa hold relationships to this water that predate every wreck on this map by centuries.
This story is not ours to tell alone. Anishinaabe tribal collaboration is in progress. As that partnership matures, this section will grow into the part of the story it has always been.
NOAA TBNMS tribal engagement →Before steam gave way to steel, every cargo bound from the upper lakes threaded a narrow gap between Thunder Bay Island and the Michigan coast.
By 1870, Alpena was a chokepoint for an industrial empire. Pine moved south to Chicago. Iron moved east to Lake Erie's mills. Two million board-feet of lumber crossed Thunder Bay on a peak day. Wooden steamers and schooners with cargo holds full of grain, copper, and ore passed within sight of one another in dense fog and uncharted reefs — and sometimes did not pass cleanly. The water here was Anishinaabewi-gichigami long before it was a shipping lane.
On a calm August evening, the Pewabic's wheelsman steered inexplicably into the path of her twin sister Meteor. She sank within minutes. NRHP-listed war grave.
Departed Milwaukee with 21,000 bushels of grain and was never seen again. Found in 1986, upright and intact, masts still standing — one of Lake Huron's most pristine schooner wrecks.
For four November days in 1913, the wind would not stop. Twelve ships across the Great Lakes did not return.
The Great Lakes Storm of 1913 — the White Hurricane — killed roughly 250 people and sank twelve ships in less than a hundred hours. Three went down within Thunder Bay alone. The 524-foot Isaac M. Scott rests upright in 175 feet of water, her wheel still in her pilothouse, hands still gripping it. The storm was the worst maritime disaster in Great Lakes history; the wrecks it produced are now among the sanctuary's most-visited.
Departed Port Huron the night the worst storm in Great Lakes history began. She rests upright in 175 feet — and the wheel is still in her pilothouse, hands still gripping it.
One of only three "monitor" hulls ever built — narrow turtleback deck, rounded sides. Rammed in dense fog by the steamer Wahcondah. All 19 crew survived. NRHP-listed.
In 2000, NOAA recognized what had been true for a century: Lake Huron's cold freshwater preserves the past in a way no saltwater coastline can.
Designated in 2000 and expanded fourfold in 2014 to its current 4,300 square miles, Thunder Bay National Marine Sanctuary protects over 200 documented wrecks — many still standing upright on the lakebed with masts in place, deck cargo undisturbed, and details that would have rotted away decades ago in salt. Water that holds 39°F year-round is also what keeps wood, iron, paint, and rigging readable a century after a ship goes down. The Heritage Center in Alpena is the sanctuary's classroom.
The largest wreck in the sanctuary. Rammed by the steamer Quincy A. Shaw in dense fog. Sits inverted in 135 feet, hull torn open along nearly her entire length.
A Liberian-registered ocean freighter that reached the Great Lakes through the newly-opened St. Lawrence Seaway, then sank within months. The sanctuary's only saltwater ocean ship.
Live conditions. Sketchfab 3D models. Audio narration. Dive info per wreck. Filter by era, depth, mooring buoy, or the Storm of 1913.
The Great Lakes Maritime Heritage Center sits on the Thunder Bay River in downtown Alpena, with the sanctuary's headquarters and a free museum open year-round.
NOAA's official sanctuary visitor center. Interactive exhibits, a full-scale schooner gallery, sanctuary HQ, and the launching point for the Alpena Shipwreck Tours glass-bottom boat.
thunderbay.noaa.gov/visitTwo-hour narrated tours over several near-shore wrecks visible through a glass viewing well in the hull. Departs from the Heritage Center dock.
alpenashipwrecktours.comFrom snorkel-accessible Monohansett in 18 feet to tech-required Isaac M. Scott at 175 feet. Many wrecks have NOAA mooring buoys; some require advanced certification. Local charters operate out of Alpena, Rogers City, Presque Isle.
Open dive mapThe sanctuary stretches roughly 70 miles along the Michigan shore. Each town has its own maritime story — lumber boom, limestone quarry, lighthouse keeper, life-saving station — and its own access points.
Find on the map