BTW - The Dornier DO-X was actually kind of attractive, in it's own
way. To
me it looks as though it was built in a shipyard. It was constrained by
the
engine technology of the day. Might have been practical if they had
been able to hang a few turboprops on it. Dornier did exactly that not
long ago with one of their WWII era flying boats that they brought up
to modern standards.

David Johnson