Titanic Joke

Titanic was about to sink. People on the ship were shouting, crying, running and praying to God - just then a passenger had the following conversation with the captain.

Passenger: How far is land, from here?

Captain: Two miles...

Passenger: Only two miles, then why these fools are making noise. I have swum further than that before.

Captain: .....????

Passenger: Just tell me in which direction, land is two miles from here?

Captain: Downward...