The Hjortspring boat is part of the Hjortspring find . The boat is the oldest plank built vessel in the North, with a length of nearly 20 meters. It consists of a bottom plank and two broad planks on either side. At both ends the boat is equipped with two upwardly bent extensions. No iron nails have been used to fix the planks. The boat is sewn together with bast. The planks are of lime wood, while the paddles are of common maple. In the interior of the boat are 10 thwards, which seat a crew of 20 warriors. Additional crew would have included a commander and two helmsmen for the two steering oars, which can be placed at either end of the boat. The Hjortspring boat is constructed using advanced ship building craftmanship, which presumably has its origin in the Bronze Age. The ship dates from the early pre-Roman Iron age, circa 350BC.