A friendly reminder regarding spoilers! At present the expanded Trek universe is in a period of major upheaval with the finale of Year Five, the Coda miniseries and the continuations of Discovery, Picard and Lower Decks; and the premieres of Prodigy and Strange New Worlds, the advent of new eras in Star Trek Online gaming, as well as other post-55th Anniversary publications. Therefore, please be courteous to other users who may not be aware of current developments by using the {{spoiler}}, {{spoilers}} or {{majorspoiler}} tags when adding new information from sources less than six months old. Also, please do not include details in the summary bar when editing pages and do not anticipate making additions relating to sources not yet in release. 'Thank You
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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)
