It is a Viking vessel of the 9th century in which the Queen Aasa was buried. The ship was covered up with earth and so it was conserved and reliably saved. The ship was digged out in 1904 near Oseburg. She was restored and exhibited in the sea museum of Oslo. It had been stated at the researching of the ship that she had a keel. Bulkheads were fastened to the keel and they were made of a whole piece of wood. Berthing was done in a clinker-built manner and it was fastened to bulkheads with the help of pins and leather belts. Iron nails joined planking boards with each other. In the upper part of the berthing they made openings - rowlocks, through which oars were passed. The heel of a mast was strengthened on a short keelson made of one beam and being of a peculiar form. A single yard carried a square sail. A large oar was used as a rudder and it was tied with the help of a strap on the side of the sternpost. Viking boats reached 30 - 40 m in length and were supplied by 30, or perhaps, 600 oars on each board. Large boats were called drakkars, i.e. dragons.