A question for our European friends: My wife and I are planning to head across the pond and are considering replacing our Lavac head and holding tank with a composting toilet. Are these 'approved/accepted ' in Northern Europe (England, Norway, the Baltic etc)? Are they commonplace there, or might we be looked upon with 'suspicion ' due to unfamiliarit by maritime authorities? Several folks in our neck of the woods here in Maine love their composting heads, but before looking into them further I want to be sure we would be OK in Europe. Many thanks for any feedback, Max