Yes, there are boating scenes in this move. A storm, even.

Nonetheless, The 300 is one of the worst movies I have seen so far this
year.

Interesting computer graphics, and some first-rate "monsters," but the
plot, the rationale, the dialogue, oh my goodness, they were awful, just
awful.

It's hard to remember a first-class movie of any sort based upon ancient
Greek history and mythology, which is amazing, considering how powerful
the stories are.

Jule Dassin's retelling of Phaedra wasn't bad, but of course it had
Melina Mercouri in it. Zorba had some interesting mythological and
historical references, but it was set in contemporary times.
Costa-Gavras' "Z" was also a tale of modern times.

Where are the great movies involving Ulysses, Achilles, Paris, Helen, et
cetera?

(And they'd all involve the Aegean and Mediterranean and boats!)