Timeship

From Memory Alpha, the free Star Trek reference.

Timeships are vessels capable of temporal transit. They are generally capable of space travel as well.

Time travel pods, Wells-class starships, and Aeon-type ships were built for use as timeships. (TNG: "A Matter of Perspective"; VOY: "Future's End", "Relativity")

The Federation experimented with sending vessels back in time as early as 2268, but timeships were not regularly built or used until after the 24th century. (TOS: "Assignment: Earth"; TNG: "A Matter of Perspective")

In the 23rd century, the USS Enterprise used the light-speed breakaway factor to travel through time. (TOS: "Assignment: Earth") By the 29th century, timeships used both temporal rifts and a temporal displacement drive to travel through time. (VOY: "Future's End", "Relativity")

[edit] List of Known Timeships

Note: the USS Enterprise is included because its mission to 1968 was officially a historical research mission. Other accidental or unsanctioned time traveling ships are not included. These "accidental" timeships include Enterprise (NX-01), Akorem Laan's ship, the USS Enterprise, the USS Bozeman, the "HMS Bounty", the USS Enterprise-C, the USS Enterprise-D, the shuttlecraft El-Baz, the USS Voyager, Quark's Treasure, the USS Defiant, the USS Enterprise-E, and the shuttlecraft SC-4.

Ship Name	Registry	Government/Agency	Type	Commander(s)	Dates	Image
unknown	unknown	unknown	unknown	Lazarus	Distant past (2267)
USS Enterprise	NCC-1701	UFP Starfleet	Constitution-class	Captain James T. Kirk	2268 (1968)
unknown	unknown	unknown	Time-travel pod	unknown, Berlinghoff Rasmussen	26th century (22nd century, 2368)
Aeon	unknown	UFP Starfleet	unknown	Captain Braxton	29th century (2373, 1967)
USS Relativity	NCV-474439-G	UFP Starfleet	Wells-class	Captain Braxton, Lieutenant Ducane	29th century
unknown	unknown	United Federation of Planets	Time-travel pod	unknown	31st century (2152)