Vikings used boats to bury their dead
Vikings were incredibly proud of their boats. They were powerful, handcrafted sailing vessels that were primary means of transportation for the Viking tribes. Therefore, it was a great honour to be interred in a boat. According to the Norse religion, valiant warriors entered festive and glorious realms after death, and it was believed that the vessels that served them in life, would come in handy in the afterlife.
The concept of a burning Viking ship, sailing off into the sea, wasn’t as common as you think however. Usually vikings were either buried in their boats, or cremated on a pyre, but to be burnt on a boat and set afloat, was reserved for only special Vikings.