Even a relatively weak storm such as Hurricane Opheliawhich brushed North Carolina in September 2005can cause serious problems.
"It doesn't take a direct hit [to cause damage]," Wilde-Ramsing said.
"We feel the effects of storms from almost down in the Caribbean. They create enough waves to affect the site."
If the berm does protect the shipwreck, the technique will probably be used at other vulnerable underwater archaeological sites, he said.
Is It Blackbeard's Ship?
The pirate who became known as Blackbeard learned his craft as a member of a pirate crew commanded by Benjamin Hornigold around 1713. By 1716, Hornigold had given Blackbeard his own ship.
In November 1717 Hornigold and Blackbeard captured a large, well-armed French ship called the Concorde. Soon after, Hornigold accepted an offer of amnesty from the British government and retired from piracy.
But Blackbeardwhose real name probably was Edward Teach or Thatchtook command of the French vessel and renamed it the Queen Anne's Revenge.
During the next six months, he became known as the most fearsome pirate afloat.
In May 1718 Blackbeard committed perhaps his most audacious act of piracy by blockading the port of Charleston, South Carolina. A few weeks later, the Queen Anne's Revenge ran aground in shallow coastal waters off North Carolina.
Historians think Blackbeard may have deliberately grounded the ship, because he intended to quit piracy and retire to the town of Bath, North Carolina.
But by the fall of 1718 Blackbeard was back at sea in another ship. He was killed in a fierce battle with the British navy at Ocracoke Inlet, North Carolina, on November 22, 1718.
The shipwreck thought to be the remains of the Queen Anne's Revenge was discovered in 1996.
Archaeologists have not found an artifact such as a logbook or a ship's bell that proves beyond a doubt that the wreck is Blackbeard's ship. North Carolina officials have not taken an official position on the identity of the wreck.
But the artifacts that have been recovered, including cannon and wood samples, are from the early 18th century.
"Truthfully, we can't say that it's definitely the Queen Anne's Revenge," said David Moore, curator of nautical archaeology at the North Carolina Maritime Museum in Beaufort.
"But we have confidence in the evidence. It's not pointing in the direction of [the shipwreck being] anything else."
Willie Drye is the author of Storm of the Century: The Labor Day hurricane of 1935, published by National Geographic.
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