Yav'lik
The Gayik'Von Yav'lik class was a series of frontline destroyers designed for inner-republic patrol, defense, and peacekeeping that was state of the art, and cutting edge for its time, from the day that the very first Yav'lik class was laid down, until several hundred years later when the class was eventually replaced by newer, more advanced, next generation destroyers. The Yav'lik class is a very sturdy, reliable, durable, and dependable starship. It is also very lightly crewed by Gayik'Von standards, with a minimum crew requirement of 250 personnel, a standard "fully staffed" compliment of 450, and a max compliment (including marines and others) of over 900, the latter only being allowed for special missions and limited deployments due to the incredible burden this puts on the ship's systems and life support.
After a successful service lifetime of nearly three hundred years, the Gayik'Von began phasing out these destroyers, sending them directly to the scrap yard rather than converting them into training ships, which is where most obsolete ships are sent, as there were now better ships that could be used for that job. Thus they weren't needed for that task, nor were they put in mothballs as they were too old, and technologically out of date by the time of their decommissioning, to justify doing that. So scrapping them was the only logical thing to do. However, as they were beginning that process, starting from the oldest to the newest ships, with the newest remaining in active service an additional 20 years past the official decommissioning date of the class (may as well not waste a perfectly good starship that was pretty much fresh off the assembly line), a brilliant, and observant supply officer noticed something troubling with the fleet's rapid decommissioning plans.
In trying to replace the Yav'lik class as quickly as possible, his commanders had overlooked the fact that, due to the incredible dependability and resilience of these destroyers, the Gayik'Von had amassed a considerable backstock of spare parts that they now no longer had an outlet for. There was so many spare parts, in fact, that to scrap them all would be seen as unnecessarily wasteful. So, after some discussion among the admiralty, it was decided that 16 of these ships, along with a substantial pile of spare parts, would be gifted to Earth to help them in their own defense, which would then partially lift the burden of protection of Earth off of the Gayik'Von, and also act as an olive branch to the rapidly growing, and advancing Society as a means to strengthen their friendship, and help keep Earth from ever becoming a threat to the Gayik'Von by ensuring that they always remained friends.
The only downside to this was that the Yav'lik class was far too advanced of a starship for Earth to step into without significant training on its use and operation. So, as part of the gift of the 16 Yav'lik class destroyers to the Society, and a mountain of spare parts, Earth's fledgling Society Space Corps, and all of their staff, were given four years of intense military and technical training on their operation, proper military protocol and doctrine, and much more, ultimately transforming them into Earthfleet. Once the training was done, the Gayik'Von left behind a small advisory contingent to man some of the ships (Earthfleet was only able to staff 4 of the ships at the start, but was later able to fill out the crews of the other 12 after doing significant amounts of inducting from the planetside population) and watch over them until Earth could take complete ownership of their new fleet. After this the Gayik'Von returned home to their families, and their prior duties, only stepping in with help as needed or requested.
Once in Earth's hands, the Yav'lik class was renamed the Titan Class, and made a frontline battleship in the defense of Earth. The Yav'lik class then served an additional 60 years in Earthfleet service before finally being superseded by newer, better starships, after having reached the end of their usable service lives. The irony of this is that, despite Earthfleet being far rougher on the ships than the Gayik'Von ever were, they never ran out of spare parts, and actually had to scrap a significant number of them in the end.
