He said grey water "comes from the sink," not "from the sink faucet." Most
of us
consider this to be a significant difference!

So grey water is fresh-waste water other than what used in the head?
I was not aware that such systems had to be pumped out on yachts of around 80
feet. What are the regs on waste water from a sink? On a small boat they
typically drain overboard.

RB