I was there when they landed in St. Bendans, Fogo Island, Newfoundland in the summer of 1977. Being of Celtic decent, I did not want to miss it, and made the trip to Fogo from where I was then living in Newfoundland.
Tim and 2 others sailed fromo Ireland to Greenland in the summer of 1976. Then they did the second leg in the summer of 1977. They were very fortunate not to have all died, it was very risky business. All of the crew had to learn how to patch with leather before they left on the journey, a skill that they definitely needed.
Heres the Brendan, under full sail, light leather before a following wind: