In which year was the oldest known boat, the Pesse canoe, discovered?

The Pesse canoe is believed to be the world's oldest known boat, and certainly the oldest known canoe. Carbon dating indicates that the boat was constructed during the early mesolithic period between 8040 BCE and 7510 BCE. It is now in the Drents Museum in Assen, Netherlands.

The boat is a dugout style canoe measuring 298 centimetres (117 in) long and 44 centimetres (17 in) wide. It was formed from a single Scots pine log. Marks are present in the cavity, likely formed from flint or antler tools.

The boat was discovered in 1955 during the construction of the Dutch A28 motorway. The route passes south of the village of Pesse in Hoogeveen through what was a peat bog. To construct the roadbed, the peat needed to be removed, and during excavation, a crane operator came across what he believed to be a tree trunk 2 metres (6 ft 7 in) below the surface. Local farmer Hendrik Wanders noticed the log and took it for further inspection.