. . . . "Class X is a starship classification term used to describe a type of starship in relation to other starship types in similar fleets. In the 24th century, the Decker-class starship was considered to be a class X transwarp destroyer by the Federation Starfleet. (FASA RPG module: Star Trek: The Next Generation Officer's Manual)"@en . . . . . "Class X is a starship classification term used to describe a type of starship in relation to other starship types in similar fleets. In the 24th century, the Decker-class starship was considered to be a class X transwarp destroyer by the Federation Starfleet. (FASA RPG module: Star Trek: The Next Generation Officer's Manual)"@en . . "Class X starship"@en .