We don't know if it's true, it came directly from one mail list, butů funny is for sure!
This is the actual radio conversation (released by the chief of naval operations) of a US naval ship with Canadian authorities off the coast of Newfoundland in October 1995.
CANADIANS:"Please divert your course 15 degrees to the south to avoid a collision"
AMERICANS:"Recommend YOU divert your course 15 degrees to the north to avoid a collision"
CANADIANS:"Negative. You will have to divert your course 15 degrees to the south to avoid a collision"
AMERICANS:"This is the captain of a US Navy ship. I say again, divert YOUR course"
CANADIANS:"No, I say again, you divert your course"
AMERICANS:"This is the Aircraft Carrier USS LINCOLN, the second largest ship in the United States Atlantic Fleet. We are accompanied with three Destroyers, three Cruisers and numerous support vessels. I DEMAND that you change your course 15 degrees north. I say again, that's one-five degrees north, or counter-measures will be undertaken to ensure the safety of this ship"
CANADIANS:"This is a LIGHTHOUSE. Your call"