Hey Stoianm,
thanks for your reply! However, when I am talking about spray, I do not mean the waves hitting the U-Boat, but the tips of a lot of wakes that get ripped apart by clashes of water and the wind, causing spray developing on the wave tops themselves in the sea even without hitting something like a ship or U-Boat. I am not even sure it is possible to get something like this into SH5, though.

P.S. Mighty thanks for all your effort, consider me a fanboy of your work =)