The water "clarity" should somewhat alter as you play, like the weather, but does not get as clear as if you use a "clear water" mod, such as what Webster made. We have been going to look into adapting that to the FotRSU mod, but have run into other problems, along with the time factor and real life issues, so have not gotten to look at but a few additions to FotRSU, so maybe the next version, we'll get a chance to look at that. It would be nice to have something to help in that regard for those who like to "video tape" their gameplay from that perspective. Some players have used
Webster's Underwater Visibility Mod and claim no problems, but we do not advocate using it, since we have no idea if it affects sensors or anything else in the FotRSU mod. Webster says it doesn't affect the sensors, but FotRSU has portions of Real Environment in it, along with parts of other similar mods, so as to fitness for usability is anyone's guess, unless they thoroughly test. ymmv
