Timeship

Timeships were vessels which had undergone temporal transit. Some timeships were designed and constructed for that purpose, while others underwent time travel through accidental or external forces.
The Federation experimented with sending vessels back in time as early as 2268, when the , under Captain James T. Kirk, used the light-speed breakaway factor to travel through time to visit mid-20th century Earth. () Seventeen years later, the same means was used to once again visit late-20th century Earth. ()
During the 24th century, use of a timeship or time travel was banned by the Temporal Prime Directive and care must be taken to avoid disrupting the timeline due to the risk of creating a temporal paradox. ()
In 2384, the crew of the converted their starship -- which had already time traveled through a wormhole -- into a timeship in order to return to their own time and save Gwyndala. ()
During the 26th century dedicated timeships were in use, including those identified as time-pods. ()
By the 29th century the Federation maintained dedicated timeships in Starfleet, including and Model HB-88 vessels. These timeships used both temporal rifts and a temporal displacement drive to travel through time. However, these ships required a great deal of experience to control, with inexperienced pilots running the risk of creating temporal explosions if any of their calibrations were off. () 
The practice of using timeships lasted into the 31st century, when an from that century was discovered in the 22nd century by . () After a temporal war in that century, all time travel technology was banned and destroyed. ()
==List of timeships==
===Officially designated timeships===
These timeships were either operated exclusively to travel through time, or were sent on time-travel missions in addition to their primary goals.
Ship Name 	Government/Agency	Type 	Commander(s) 	Dates 	Image	Reference
 	Starfleet 	 	Captain James T. Kirk	2268 (1968) 	 	
unknown 	unknown 	Time-pod 	Berlinghoff Rasmussen	26th century (22nd century, 2368)	 	
Aeon 	Starfleet 	Model HB-88	Captain Braxton 	29th century (2373, 1967) 	 	
Borg Queen's sphere	Borg Collective 	Borg sphere	Borg Queen 	2373 (2063) 	 	
 	Starfleet 	 	Captain Braxton 	29th century 	 	
 	Starfleet 	 	Lieutenant Ducane 	29th century 	 	
Unknown 	Unknown 	Unknown 	Unknown 	31st century (2152) 	 	
==="Unsanctioned timeships"===
These starships and vessels were primarily intended for uses other than time travel, however through accidental or unofficial action they traveled to different eras.
Ship Name 	Government/Agency 	Type 	Commander(s) 	Dates 	Image 	Reference
unknown 	privately owned 	Bajoran lightship 	Akorem Laan 	22nd century (2372) 	 	
 	Starfleet 	 	Captain Jonathan Archer 	2154 (2037) 	 	
 	Starfleet 	 	Commander T'Pol 	2154 (1944) 	 	
USS Discovery (NCC-1031)	Starfleet 	Crossfield-class 	Captain Saru 	2258 (3189) 	 	DIS: 
DIS:
 	Starfleet 	 	Captain James T. Kirk 	2266 	 	
 	Starfleet 	 	Captain James T. Kirk 	2267 (1969) 	 	
(NCC-1941) 	Starfleet 	 	Captain Morgan Bateson 	2278 (2368) 	 	
 	none 	Klingon Bird-of-Prey 	Admiral James T. Kirk 	2286 (1986) 	 	
 	Starfleet 	 	Captain Rachel Garrett Richard Castillo	2344 (2366) 	 	
 	Starfleet 	 	Captain Jean-Luc Picard 	2364 	 	
 	Starfleet 	 	Captain Jean-Luc Picard 	2368 	 	
 	Starfleet 	 	Commander William T. Riker 	2369 	 	
 	Starfleet 	freighter 	unknown 	2364 	 	
El-Baz 	Starfleet 	Type 15 shuttlepod 	Captain Jean-Luc Picard 	2365 	 	
unknown 	Starfleet 	 	Captain Jean-Luc Picard 	2369 	 	
unknown 	Romulan military 	 	unknown 	2369 	 	
Quark's Treasure 	privately owned 	Ferengi shuttle 	Quark 	2372 (1947) 	 	
(NCC-74656) 	Starfleet 	 	Captain Kathryn Janeway 	2372 (Big Bang) 	 	
(NCC-74656) 	Starfleet 	 	Captain Kathryn Janeway 	2373 (1996) 	 	
 	Starfleet 	 	Captain Benjamin Sisko 	2373 (2268) 	 	
 	Starfleet 	 	Captain Benjamin Sisko 	2373 (22nd century) 	 	
 	Starfleet 	 	Captain Jean-Luc Picard 	2373 (2063) 	 	
 	Starfleet 	Support courier 	Dal R'El 	2384 (2436) 	 	,
 	Starfleet 	Support courier 	Dal R'El 	2436 (2384) 	 	
 	Starfleet 	 	Captain Chakotay 	2436 (2374) 	 	
 	Starfleet 	 	Captain Chakotay 	2385 (unknown point in the past)	 	
 	Vulcan Science Academy	prototype 	Ambassador Spock 	2387 (2258) 	 	
Narada 	Romulan Star Empire 	Mining vessel 	Captain Nero 	2387 (2233) 	 	
SC-4 	Starfleet 	personal shuttlecraft	Admiral Kathryn Janeway 	2404 (2378) 	 	
== See also ==
* Lazarus' spaceship, also described as a "timeship"
* Daedalus Project
== Appendices ==
===Apocrypha===
In the Department of Temporal Investigations novel Forgotten History, it is revealed that the newly-formed Department of Temporal Investigations attempted to create their own timeship in 2270 and again 2273.
The first attempt used the original engines of the USS Enterprise, then thought to be the only engines capable of performing a slingshot maneuver (due to their cold-start in ), basically adapting a stripped-down version of a Constitution-class engine system without a saucer section. However, their first attempt to create a timeship resulted in the ship being badly damaged after it overshot its target date and returned to the past at a point before its original departure. Its crew were able to avert the accident by aborting the planned flight, but this simultaneously confirmed that time travel could genuinely change history rather than simply creating a new timeline, as the future ship ceased to exist once the time of the originally-scheduled test-flight passed without the younger ship launching.
The second attempt combined the Enterprises original engines with a dimension-shifting capsule taken from the Vedala, with the goal of witnessing the future of parallel universes without the risk of changing history in their home universe, but the incompatible nature of the two technologies resulted in the ship becoming trapped between 2273 and 2383 in two different universes. As a result, the canon 2383 was nearly erased as other parties send advanced knowledge to their counterparts in 2273, until Lucsly and Kirk were able to bring the ship back into sync with its true timeline, Lucsly simultaneously teaching Kirk how to make any ship capable of performing a slingshot maneuver in future.
===External link===
*
de:Zeitschiff
fr:Vaisseau temporel
ja:時間艦
Category:Spacecraft classifications
Category:Time travel technology