|2252 2253 2254 2255 2256 2257 2258|
|2220s 2230s 2240s 2250s 2260s 2270s 2280s|
|22nd century - 23rd century - 24th century|
- Federation starships USS Achilles and USS Brazzaville are lost in battle with Tholian forces. (Star Trek: The Early Voyages comic book)
- The Efrosian Captain ("Sneg" - unknown if first or last name) of the USS Justice is born on Efros. (Tales of the Seventh Fleet)
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