Another interesting and relevant post from Kate Phizackerley over at the Valley of the Kings blog.
Kate added a follow-up comment about the video at the above link:
If you are finding the video hard, Wikipedia (http://en.wikipedia.org/wiki/Scota) is a bit dry but gives the bare bones. If you’d like to know more than that then the Kingdom of the Ark by Lorraine Evans is an accessible book. I don’t agree with all of her conclusions but she looks at things like the Ferriby Boats when discussing the feasibility of sea travel from Egypt to Ireland which is interesting reading of itself. I picked up my copy on Amazon for a penny plus P&P.