Another h/t to Ewan Duffy for the link to this Galway Independent article about the proposed Dublin to Galway ship canal. I was impressed to note that it covers Edward Watkin‘s late nineteenth century for a Dublin to Galway ship canal, which would save transatlantic steamers from having to go north or south of Ireland when travelling between Britain and America. It was, of course, a completely insane proposal; as some folk pointed out at the time, only Liverpool steamers found Ireland an obstacle and, being capable of 20 knots or so, might actually lose time by having to travel at 3 knots and through locks on a canal instead of steaming north or south about.
Incidentally, the article mentions the Panama Canal, which joins the Atlantic and Pacific Oceans. So which ocean is at its western end?