Cheers Martin.
Getting the workflow going for this was tricky, because I had to decide weather to go with a full realflow ocean, or terragen ocean.
After a few tests it was obvious that the terragen ocean was far more varied, detailed and quicker to achieve procedurally than using realflow.
Basically, once I'd got an ocean pass out of terragen that I thought would work, I'd then Import that sequence as an image plane in maya.
That way I could animate the ship reasonably enough to match the render.
There are more accurate ways, but this was quick and simple.
I then took the ship into realflow to generate the splash and foam and mist elements.
This is was tricky, setting the simulation up to match the speed and turbulence took about a day.
I then used the surface mesh from realflow to black hole or matte out the base of the ship and make it appear that that the terragen waves are passing the ship, and the other elements then sit on top.
Hope that makes some sense.
Thanks Traveller.
There may be a few more tweaks yet, depends on time.
Chris