ESSEX, ENGLAND—A 350-year old gun carriage has been brought to the surface from the wreckage of The London, the warship that in 1660 carried Charles II from the Netherlands to restore him to the throne of England. The ship blew up in 1665 when gunpowder that had been stored on board caught fire. The ship now rests in two parts near Southend Pier in Essex. Historic England and Cotswold Archaeology are recovering what they can of the ship, before it is lost to sea worms and changing currents brought on by climate change. “This 350-year-old gun carriage is in near-perfect condition but is a national treasure at risk. Unless we recover it quickly, it may break up and be lost,” maritime archaeologist Alison James of Historic England said in a press release. To read about two other historic shipwrecks, go to "Mary Rose and Vasa."