But I Have Bigger Guns
According to Snopes.com, this urban legend is FALSE. Great tale, though.
Transcript of an actual conversation between Canadian Authorities and a U.S. Naval warship off the coast of Newfoundland. Reprinted in the Memorial University campus newspaper after its release by the Chief of U.S. Naval Operations on Oct. 10, 1995.
U.S. ship: Please divert your course 15 degrees to the North to avoid collision.
Canadian reply: Recommend you divert your course 15 degrees to the South to avoid collision.
U.S. ship: This is the Captain of a U.S. Navy ship. I say again, divert your course.
Canadian reply: No. I say again, you divert your course.
U.S. ship: This is the aircraft carrier USS Eisenhower. We are a large war ship of the U.S. Navy. Divert your course now.
Canadian reply: This is a lighthouse. Your call.