I think it's a really cool project!
My first reaction...and it's just a 'gut hunch'...is that your excellent wave/spray effect dictates that your smoke should be streaming much more horizontally with the wind direction. Photos of ships of the same class -- some at anchor, in calm seas -- still show quite a bit more dispersal to leeward.
Check this pic of Audacious underway in much calmer conditions on Wikipedia.
But once again, it's a really neat effort and a great touch for an action diorama.
Cheers