How do you sink a polish war ship?

You put it in water

What is the motto of the French navy?

To the water, it is time! Or in french... ... BWA HA HA HA. OK... I know this is kind a dad joke but.... yeah (for those don't speak French and thus don't get this, click the link and click the speaker to have it read to you ;) )

What do you get when water washes away dirt?

a road

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How do you sink an Irish submarine?

A: Knock on the hatch.

How can north korea tell if it made a ship or a submarine?

By how fast it sinks.

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How do you confuse a polish laborer?

Lay down three shovels and tell him to take his pick.

Why do Polish police cars have stripes on the side?

A: So the cops can find the handles.