Shipwreck off N.C. likely dates to American Revolution

The research vessel Atlantis with the submersible Alvin hanging off its sterm. (Credit: Luis Lamar/Woods Hood Oceanographic Institution)

Marine scientists searching for a mooring were surprised when they found a shipwreck that may date to the American Revolution. They made the discovery off the North Carolina coast on July 12.

“Our accidental find illustrates the rewards—and the challenge and uncertainty—of working in the deep ocean,” says expedition leader Cindy Van Dover, director of the Duke University Marine Laboratory. “We discovered a shipwreck but, ironically, the lost mooring was never found.”

Among the artifacts discovered amid the shipwreck’s broken remains are an iron chain, a pile of wooden ship timbers, red bricks (possibly from the ship cook’s hearth), glass bottles, an unglazed pottery jug, a metal compass, and another navigational instrument that might be an octant or sextant.

One of nine glass bottles observed at the site
One of nine glass bottles observed at the site. (Credit: WHOI)
An octant or sextant and pottery jug from the wreck site
An octant or sextant and pottery jug from the wreck site. (Credit: WHOI)
Brick pile from the shipwreck
Brick pile from the shipwreck with a drift of Sargassum weed from the surface. (Credit: WHOI)
sonar image of the shipwreck
A sonar image of the new shipwreck taken by the autonomous underwater vehicle Sentry. (Credit: WHOI)

The wreck appears to date back to the late 18th or early 19th century, a time when a young United States was expanding its trade with the rest of the world by sea.

“This is an exciting find, and a vivid reminder that even with major advances in our ability to access and explore the ocean, the deep sea holds its secrets close,” says Van Dover.

The team aboard the Woods Hole Oceanographic Institution (WHOI) research ship Atlantis spotted the wreck while using a robotic autonomous underwater vehicle named Sentry and a manned submersible named Alvin.

“I have led four previous expeditions to this site, each aided by submersible research technology to explore the sea floor—including a 2012 expedition where we used Sentry to saturate adjacent areas with sonar and photo images,” Van Dover says. “It’s ironic to think we were exploring within 100 meters of the wreck site without an inkling it was there.”

“This discovery underscores that new technologies we’re developing to explore the deep-sea floor yield not only vital information about the oceans, but also about our history,” says David Eggleston, director of the Center for Marine Sciences and Technology (CMAST) at North Carolina  State University and one of the principal investigators of the science project.

‘Undisturbed and well preserved’

After discovering the shipwreck, Van Dover and Eggleston alerted NOAA’s Marine Heritage Program of their find. The NOAA program will now attempt to date and identify the lost ship.

Bruce Terrell, chief archaeologist at the Marine Heritage Program, says it should be possible to determine a date and country of origin for the wrecked ship by examining the ceramics, bottles, and other artifacts.

“Lying more than a mile down in near-freezing temperatures, the site is undisturbed and well preserved,” Terrell says. “Careful archaeological study in the future could definitely tell us more.”

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James Delgado, director of the Marine Heritage Program, notes that the wreck rests along the path of the Gulf Stream, which mariners have used for centuries as a maritime highway to North American ports, the Caribbean, the Gulf of Mexico, and South America

“The find is exciting, but not unexpected,” he says. “Violent storms sent down large numbers of vessels off the Carolina coasts, but few have been located because of the difficulties of depth and working in an offshore environment.”

Bob Waters of WHOI piloted Alvin to the site of the newly discovered shipwreck after Sentry’s sonar-scanning system detected a dark line and a diffuse, dark area which they thought could be the missing scientific mooring. Bernie Ball of Duke and Austin Todd of NC State were aboard Alvin as science observers.

The expedition has been focused on exploring the ecology of deep-sea methane seeps along the East Coast. Van Dover is a specialist in the ecology of deep-sea ecosystems that are powered by chemistry rather than sunlight, and Eggleston studies the ecology of organisms that live on the seafloor.

Funding for the research expedition and for the development of Sentry came from National Science Foundation. NOAA’s Marine Heritage Program is part of its Office of National Marine Sanctuaries.

Source: Duke University