A Viking ship unearthed in Sandefjord in 1880 under a large tumulus on the Oslo Fjord, Norway. Much of its original timber was preserved by the clay in which it was set. In the middle of the ship, a special platform had been constructed to hold the funerary chamber, which contained the skeleton of a man (possibly King Olaf of Vestfold who died in 890) surrounded by weapons, slaughtered animals, and other objects. The ship is the ultimate Viking war machine - a slender oak-built vessel made for strength and speed, propelled by a large square sail and 16 pairs of oars. It would have been equally navigable in open seas or in shallow inland waters; in 1893 a replica successfully crossed the Atlantic.