D'argh, matey, if ye want to be navigator, ye've got to learn the seas of Europe. They be seven:

1: The Caspian sea.

2: The Black sea.

3: The Aegean sea.

4: The Adriatic sea.

5: The Mediterranean sea.

6: The Tyrrhenian sea.

7: The North sea.

These seas be cold, says I, but if ye learn them, ye can rule the fleets of kings and queens. Yargh.

Shiver me timbers.