This seems as plausible an explanation as anything else.Okay, some of this is from previous postings.However long there was between TOS and TMP isn't what I was looking theories for, but rather for thoughts on what the crew would've done it TMP was set in late-2270s and not the early-2270s
8 years before TMP, after the first five year mission the Enterprise undergoes a short refurbishment, there is a general crew rotation. The ship departs on a second (anticipated) five year mission. Kirk is promoted to Fleet Captain at this time, on several occasions he commands small fleets of starships in battle. Three years into the mission Kirk becomes a Commodore, this gives him administrative responsibility over a dozen starships and their crews. Christine Chapel leaves the ship to attend medical school at this point
4 years before TMP, Commodore Kirk turns over command of the Enterprise to Captain Decker at a outlying starbase. After a brief standard resupply Decker took the Enterprise out on what was anticipated to be a three plus year mission. The extensive refit was already scheduled. At this time the Enterprise is no longer considered by Starfleet to be a "front line" vessel and Decker's mission is heavy on survey, exploration and diplomacy, light on border patrol and confrontation assignments.
Spock deactivates his commission and returns to Vulcan. McCoy resigns his commission and goes into private medical research.
Upon arriving on Earth Commodore Kirk takes a few weeks leave and then reports to Starfleet Command to a position on the operations staff.
2.5 years before TMP, Kirk is assigned as Starfleet Chief of Operations. at this time he is promoted to Rear Admiral (note; Chief of Operations in Starfleet is not the top position that it is in the US Navy).
1.5 years before TMP, Starfleet begins redesigning the Enterprise. Scotty returns to Earth as one of the engineers assigned. Pavel Chekov returns to the academy for advanced officer training and then to attend tactical security school.
8 months before TMP, the Enterprise returns to Earth orbit and the refit begins. Decker, Sulu and Uhura remains with the ship during the refit.
Decker at this point has been in command of the Enterprise for less than four years, while there have been rare low-level skirmishes in that time, Decker never commanded the ship in full combat nor handled a major crisis, and is still considered by some to be "untried."
![]()
We use essential cookies to make this site work, and optional cookies to enhance your experience.