The crew did not consume anything on board which would not have been available in the 10th Century, meaning no coffee or potatoes. “The boat, Brioc, is a currach like one from the 10th Century. "During the 10th Century in Brittany we had a lot of links with Britain, and with all the countries around the Celtic Sea. “The 10th Century was a very bad time for the Celtic people because clearly the Vikings were very hard on a lot of matters. “We need that to cross, but everything in the normal navigation period will be like the 10th Century.”