Swimming:
From previous experience I'd expect taking 30 damage for each water square when purposly drowning.
However, if I have the skill (very low from blup) isnt there also a chance for partial success, ie even failed swim deals less damage?
(I had the fun 4 squares of water in ud, go up to surface, do healing quest, do pc, get water cutting off pc5, now have swim, on the +side a regular troll on pc5 dropped skullcrusher , game telling me not to be angry for water).
Edit: I found answer myself, it was a huge difference just to have 15-20 swim skill.
Possible that the damage is also lowered by for example high dex.
Ranger range:
Does the ranger lvl 18 ability "Missile range is increased by 4" also apply to thrown?