User blog comment:Owlfeathers0117/An idea to make surface ships useful again./@comment-27820070-20141224034257/@comment-11135771-20141224045431

It's possible for them to fly at low altitude. But like Derp said, flying ships just don't have that much of an advantage then. Surface fleets of even normal size vessels can fairly quickly disable flying ships at low altitude, even huge ones. Also, it is possible to fly ships through the atmosphere. It's just very risky to attempt to do so, as as previously mentioned, of limited value.