well... ever heard of a "floatplane"?
seriously though, I agree, no point in highlighting those little exits, just leave via the gaping hole where the fuse broke in half
but to digress, I end up on the BA shuttle LGW-MAN-LGW positioning quite a bit, and am curious, I sit through the " in the event of a landing on water" brief patiently, but in reality can you even find water to hit on this route? you would certainly have to work hard to actually end up in it.