Did Viking longboats in fact have shields on the side of the ships?

We are currently working on an educational video game about the Viking Age. In this we want to make as historically accurate illustrations as possible.

We are currently working on an educational video game about the Viking Age. In this we want to make as historically accurate illustrations as possible.

I myself am working as a historian on the project. Many years ago I worked with Viking Age history, and I remember a discussion on whether or not vikings stored their shields on the side of their longboats when they travelled.

As far as I remember, archaeological and historical sources indicate that they did, though modern experimental archaeology has had difficulties figuring out exactly how it would be pratical to do this.

I am looking for arguments from both sides, and would really appreciate source citations (preferably peer-reviewed, but anything can be useful), so I can read the research and present it to our team.