Captain Shaw claimed that when he took command of the Titan-A he had to purge the system of Captain Riker's jazz music library
but Riker was the captain of the USS Titan, a Luna-class ship; there's no record of him ever commanding the Titan-A (Neo-Constitution class)
the only explanation is that when Starfleet commissions a ship with the same name as a previous ship, the music library from the previous ship is automatically copied over to the new ship, in order to establish consistent vibes
Memory Alpha appears to be in a state of some confusion about the Titan and Titan-A, which I guess isn't that surprising given that we've only known about the latter for a week or so
but it claims that the Titan-A was launched in 2401 (current year at the time of the show) even tho Shaw claims to have completed 36 missions in the ship over a 5-year period
on the other hand, Riker's Titan is claimed to have been pulled from service in 2398, so did they have two Titans active at the same time?
https://breezewiki.pussthecat.org/memory-alpha/wiki/USS_Titan_(NCC-80102-A)
@caleb @bnys huh! the idea that they could be the same ship makes the dates work better, but the idea that a ship could change its entire class feels suspect; the first ship has nacelles below the saucer section and the second one has them above; way bigger structural differences than Constitution->Constitution-Refit
anyway, Memory Alpha describes them as separate ships
Discovery is precedent for the same ship getting a new registry number, but that one is a lot easier to explain as a special case given the nine hundred years that passed between its disappearance and reappearance (personal headcanon here is that the Starfleet software used to track registry numbers was incapable of recording the reactivation of a ship with such an old registry, and it was easier to issue a new one than to fix the bug)
tech? no! man, see...
Caleb Hearth 