[Crosseye76]

I'm not sure We'd see that in SH4. That was mostly for the big guns, BB's and the like to aid spotting the fall of shot for corrections in long range shooting. Pretty in the day, not so much good at night. But when you don't have decent gunnery radar, you gotta do what you can do.

I kind of think if your close enough in a Fleet Submarine to observe the impact of Japanese heavy shells near something, you've got more problems to worry about than the color of the splash.