I'm a stickler for scientific detail. Tectonic plates, volcanism, mountain formation, erosion and deposition, the works. If it's in a geology book, I'll try to use it. Here's the problem: two of my continents run longitudinally, not up and down. Being the anal retentive person I am, this has me in quite a predicament. I have no clue how to model the ocean currents there. Silly, I know.

Does anyone know of any software that lets you plop down some continents and displays currents?