Soyuz Class	Centaur Class
Cheyenne Class	Daedalus Class
Defiant Class	Constellation Class
Constitution Class	Excelsior Class (Modified)
Ambassador Class	Galaxy Class
Sovereign Class	Excelsior Class
Danube Class	Griffin Class
New Orleans Class	Niagara Class
Norway Class	Olympic Class
Nebula Class	Polaris Class
Prometheus Class	Miranda Class
Rigel Class	Saber Class
Steamrunner Class	Trident Class
Oberth Class	Intrepid Class