The Oseberg ship from around 800 AD is the best preserved Viking ship. It was used as part of an elaborate burial.
The Viking ships were sometimes called dragonships, since according to sources of the time, they often had a dragon carved out at the tip of the boat. This one has a coiled serpent (you will find at the top of the image).
Unfortunately, a real dragon tip has never been found. The dragon depicted in front is one of the grave goods. Its purpose is unknown.
"The Great World History Book"