1. Yes, and probably less chance of getting a public lewdness charge. My
guess is that it might also be legal to pee in the sink.
2. That's basically what a portapotti does. Phewee!
3. The infamous Bumper Dumper? 
AFAIK, it would be legal because nothing ever
gets "contained". See one for legal warning.
"chuck h"  wrote in message
  ...
 A couple of off the wall (OTW) questions about boat sanitation systems.
 These questions could be considered wierd I guess, but are serious none
the
 less.
 Regarding inside the three/twelve mile limit:
 1. It's legal to urinate over the side of the boat afik.  Would it also be
 legal to urinate through a cabin window (port) which could be opened and
 closed?
 2. Would there be a problem with using a holding tank constructed sort of
 like an outdoor toilet --- sliding gate valve in top of tank, sit down,
open
 the valve, defecate, close the valve?
 3. What about a toilet seat hung off the transom?  Would it be legal to
sit
 on that and defecate directly into the water?