| Enterprise gets 18 month refit The design changes create the new ship class; "Enterprise Class". The Klingons begin upgrading most of their fleet of old D7 cruisers creating a new class "K't'inga class" cruiser. Janice Rand serves on Enterprise as Transporter Chief Nurse Chapel promoted to Doctor, and serves on Enterprise as it's new CMO (until McCoy comes back) | 2273 |
| (ST:TMP) Kirk assumes command of Enterprise to save earth from probe V-ger. Former captain William Decker goes missing. Spock and McCoy return to Starfleet Starfleet introduces a new class of starships, the Miranda class. The Reliant is one of the first ships of this class to be constructed | 2274 |
| Kirks second 5-year mission on Enterprise | 2275 |
| (around this time) Spock rescues Saavik, and becomes a sort of surrogate parent | 2276 |
| Second 5 year mission ends Uniforms changed Spock promoted to Captain Spock gets command of Enterprise Enterprise used as cadet training ship Chekov transfers to Reliant under Captain Terrell | 2279 |
| Cadet training on Enterprise begins | 2280 |
| Chekov promoted to 1st officer of the Reliant | 2281 |
| Kirk Meets Antonia and retires from starfleet (ref - ST7:Gen) | 2283 |
| Project Genesis submitted to the federation by Dr. Carol Marcus | 2284 |
| Kirk tells Antonia he's going back to starfleet (ref - ST7:Gen) Kirk accepts a position at Starfleet Academy (ST:II, ST:III) Scotty promoted to Captain (of engineering) Peter Preston(Scotty's nephew) dies Spock dies Khan Dies Reliant Destroyed Project Genesis destroyed Trainee crew reassigned Saavik and David Marcus transfer to Grissom Starfleet's new Oberth class ships make their first appearance, the Grissom being one of the first commissioned. These ships are built mostly as science vessels, are much smaller than most other starships, have a much smaller crew and are only lightly armed. Excelsior Commissioned The Excelsior class of ships will be the most popular ship design (sometimes with slight design changes) in Starfleet for the next century. The Excelsior was originally built to test a new Transwarp drive, but when that proved a failure, the Excelsior was fitted with regular warp Engines. Grissom Destroyed David Marcus Dies Enterprise Destroyed Enterprise crew exiled on Vulcan (this was a very BAD year) | 2285 |
| (ST:IV (78 years before TNG)) Rand and Chapel both assigned to Starfleet Command in San Fransisco Spock Reborn Enterprise-A commissioned Kirk demoted to Captain Transwarp drive testing failed. Excelsior refitted with regular warp drive. The Excelsior ship design was excellent though, and Starfleet begins to construct an entire line of "Excelsior Class" ships. They will soon be the backbone of the Starfleet like the K't'inga class battlecruisers are for the Klingon Empire. | 2286 |
| (Star Trek V) Relations with Klingons getting better (Klingons allowed on board Enterprise) | 2287 |
| Sulu gets command of Excelsior Janice Rand serves on Excelsior as Communications officer | 2290 |
| Ensign Tuvok begins serving on the USS Excelsior under Captain Hikaru Sulu. Tuvok reports to Commander Janice Rand. After serving on the Excelsior, Tuvok will leave the Starfleet for over 50 years. (Star Trek VI) Klingon economy devestated by praxis explosion Klingon/Federation relations hit a bump as the Klingon chancellor is assasinated, but continue to improve. Klingon technology to fire when cloaked is lost Enterprise-A decomissioned, and the Enterprise crew soon goes their seperate ways. Captain Sulu continues as captain of the Excelsior with his crew just beginning their adventures. | 2293 |
| (Star Trek VII (Gen.)) Enterprise-B commissioned with Captain John Harriman Guinan and other El-aurian refugees rescued by Enterprise-B with Kirk, Scotty and Chekov Kirk presumed dead | 2294 |
| Scotty Disappears en-route to a retirement colony when the Jenolan crashes on a Dyson Sphere. Scotty sets the transporter to hold his pattern until he can be rescued. | 2295 |