Observing a light across the water, the captain
instructed the other vessel to change her course.
The response: "Change your course ten degrees north."
Captain: "I am a captain, change your course
ten degrees south."
The reply: "I`m a seaman first class-
-change your course north."
Captain: "Change your course now. I`m on a battleship."
The Reply: "Change your course, sir - I`m in a lighthouse!"