Ships are further spaced apart in FotRSU, especially the warship groupings. That gives the rude destroyers more room to cut in and out of line without colliding as much with their charges. They will still run into each other, just maybe not as often. I have an old video somewhere on YouTube of the after- effect of doing a near-90 degree attack from about 2400 yards away (bad skipper navigation skills) from a Shokaku, with a DD just slightly ahead of him, and on the other side. As soon as I was detected (periscope), the DD cut in front of the Shokaku, which of course slammed on the brakes, which did allow all four torps from my Porpoise to make contact with the Shokaku... of which only one did detonate... sigh - but the Shokaku caught the DD amidships, and almost rolled the DD over... they kept on like that for a good while, with the Shokaku taking the DD out of the group's escort response counter-attack, which was still two of the DD hanging over my head for about six hours... everybody got away, including me...
- You just have to have the right circumstances, and they will still collide with each other in some rather comical ways, but also sometimes in some rather realistic ways...