Union ships

Depending on the context, the term Union Ship can have several meanings - in some cases even simultaneously:
 * 1) Ship built built by an company located within the United Stars of the Galaxies and exclusively owned by one or more Union Citizens.
 * 2) Ship owned by one or more Union Citizens and registered at an Union Port.
 * 3) Ship owned by a company itself owned by one or more Union Citizens.
 * 4) Ship belonging to the United Stars of the Galaxies or one of it's organizations (Military, Science Council, Federal Police, Justice Department, etc.