Be advised, (specifically speaking of 16km visibility mods for SH3) using older environmental mods will bring back the old horizon demarcation quirk and the old wave polygons.
Marhk's Ocean MADNESS v2 mod was realy good for its time, but the evolution of environmental work for SH3 has gone far beyond it now.
(Good old Marhkimov. I remember when it was he and myself working on the Grey Wolves Supermod before there was ever anyone else on the team. My how time flies. Its been almost four years now.
)