DaveReidUK
A flying boat is any aircraft with a hull that allows it to land on water, and can be amphibious (like the US-1) or non-amphibious (like the Mars).
I accept your "correction". Howover, my point was that there are amphibious flying boats still in the air but, as far as I am aware, there are no longer any non amphibious ones still flying. (I have had two weekis of not looking at a computer, so have only just seen your comment).