water exhaust on the side of the ships ?

That's how I felt about SH4 water sprays from the ballast water intake ports. I know water should move freely from those ports, especially when surfacing - can see it on US subs and U-boats in old films. But the deal is - in those films it never looks like the white sprays that shoot out from the subs in SH4. Not only that but in the real films such water rarely pours out of all the ballast holes at the same time and with the same volume. SO the SH4 routine ends up looking fakey. If it can't be done well - then its best not done.