Urinating into water sources isn't a problem - your urine is going to be a lot more sterile than whatever source of water you happen to be using for a john at the time. No, no one wants to drink it, but you're not going to make any people or animals sick. Now, there may be a question about chemicals from manufactured foods and dyes, etc leaving your body and entering the environment, but that's a separate issue, and one that is more difficult to address. #2 is a problem in fresh water sources, and may in some salt water sources (I have no expertise in LNT, I just know the basics), but out in the ocean is fine... though when I went sailing with Outward Bound, we preferred to use a bucket, since it's easier than hanging your butt out over the side, not to mention less exposed...