So basically a two plus hours fight sequence with some lame attempt at plot and almost no character. It is visually impressive, but never much fun to watch. The aliens were more expressive that the humans. Perlman is kind of fun.
Leonard Maltin/Plot synopsis:
As a war between humankind and monstrous sea creatures wages on, a former pilot and a trainee are paired up to drive a seemingly obsolete special weapon in a desperate effort to save the world from the apocalypse.