On the map "Great Battle of Dolb**bs" :D (World war.h3m), a Sky Ship is built in the Tower belonging to Blue.
And since it was made in the WoG editor, it will only run in WoG, but not in pure "Heroes": it won't even be on the list there.
On the map "Unknown Outcome" (1.h3m), at the start, I can only see two small circles around Necropolis (Red) and Tower (Blue), as it should be.
To play over the network, the map properties must have at least 2 players set to human (in the menu: Tools - Map Properties - Player Properties). In your case, only Red is human.
P.S. There's no need to complicate things by uploading maps to Narod: here you can attach them to the message (in advanced mode), just pack them into a ZIP file (see, for example, this post above). ;)
(Василь Симоненко. Люди – прекрасні)