Archaeologists have recovered five more cannon from the wreck of Blackbeard's flagship off the coast of North Carolina.
The weapons, four one-ton cannon and one weighing nearly 1.5 tons, were raised from the floor of the Atlantic Ocean on Monday.
All five of the weapons fired six pound cannonballs, and a total of 29 cannon have now been raised from the site in Beaufort Inlet.
Pirate Blackbeard was killed in 1718 by the Royal Navy
Project director Billy Ray Morris said historians think the largest of the cannon was made in Sweden, indicating Blackbeard, a pirate whose real name was Edward Teach, had guns from different countries on the Queen Anne's Revenge.
He said: "We think the largest of the cannons may be of Swedish origin since the only other recovered gun this size was made in Sweden.
"We also hope to recover two large concretions each the size of a twin bed.
"They may contain barrel hoops, cannonballs and other treasures."
State officials said around 280,000 artefacts have been recovered from the wreck.
Blackbeard, the world's most infamous pirate, captured a French slave ship and renamed it Queen Anne's Revenge in 1717. His flagship was known to be equipped with 40 guns.
Volunteers with the Royal Navy killed him in Ocracoke Inlet the following year, five months after the ship sank.
The wreck was discovered in 1996.
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