…

The light signals back: “Change yours, 10 degrees west.”

Angry, the captain sends: “Look, I’m a navy captain! Change your course, sir!”

“I’m a seaman, second class,” comes the reply. “Change your course, sir.”

Now the captain is furious. “I’m a battleship! I’m not changing course!”

There is one last reply. “I’m a lighthouse sir, I believe it’s your call.”