I have tested it, and the underwater fog removal, black bars work.
but the indicators for chests and blackpearls...
I have yet to find an actual chest, cant confirm if it correctly shows the chests or not. there are two (actually 4, 2pairs) pillars in sea of graves, where no chest is located near them. is that a bug?
if I find an actual chest I will edit this post here.
ok, I found some chests now, after two hours..
the chest are not marked with those huge glowing pillars, they are replaced with those pillars, the actual chest model is gone. I pay a visit to those chests in graves later to look at them again, maybe I didnt notice the F-button showing up or something
its interesting, now that I can know where the chests are, all those random boats you meet out in the ocean arent random anymore.
you can easily detect anyone directly heading towards a beacon and passing alot of wrecks underwater because they dont have to check those wrecks at all. its funny how you need a hack to see others hacking.
I only met about 10-15 boats, and out of those maybe 4 werent transporting a pack, and those 4 all beelined towards a beacon