It sounds like there is some other problem here otherwise I would be getting a lot of bug reports about this. Are the maintenance facilities where the overhaul is taking place large enough to support the ship being overhauled? As to the time taken by overhauls, most real-world warships spend more of their time in overhaul than in Aurora. I think the last set of overhauls for the Nimitz class carriers were scheduled for 33 months each.
Steve
Yes, there was sufficient maintenance facilities. The problem was
that the ship was going in to overhaul status but apparently was not
considered at the homeworld, just very very close to the homeworld, so
the clock kept advancing. And of course sometimes I wouldn't notice
this until a year or more later meaning it had to then spend much more
time being overhauled once I moved it to the HW. This happened
several times when I was trying to play with maintenance turned on. I
wonder how many people are playing with maintenance turned off so they
don't encounter this problem?
I didn't have that much trouble with warships overhauls since they
spent a lot of time at the HW. My biggest problem was with survey
ships that try to stay out awhile surveying. It seemed their
expensive survey instruments loved to break down as soon as possible.
The design I had copied had enough maintenance supplies to repair a
sensor once, but a 2nd failure it couldn't. So it also couldn't
damage control one even after it topped off its maintenance supplies.
So then it would end up spending seeming ages in a shipyard repairing
one sensor.
I'm pretty sure a modern warship spending that much time in port is
either to save money or a major refit. Until recently I worked right
next to a USN Commander but unfortunately he is at sea now. I'll have
to ask if there are any senior chiefs or such I can chat with about
how often and how long the average modern warship needs to be
overhauled.