I once had a Triumph Herald. Strange car, one of the last cars built with a chassis and separate body mounted on it. When a knowledgeable mechanic got the car over a pit and had a look, he came back and asked me “what year was she built?” when I told him late 61, he then said it made more sense, the car had a Mk1 Chassis but a Mk2 body (the Mk2 chassis used sections shared with the Spitfire Roadster as well as shared drive train mountings). He had heard that a few “hybrids” might had been made and sold but had never seen one before. This also meant that some items like engine mounts would be much harder to find. So building on that…
1) The ship was produced at the time of a switch over from a local to imperial standards, or an older to newer standard (usually the same thing). The ship therefore is a hybrid of older and newer systems. This could apply to one, some or all of the ships main systems, (life support, powerplant, M drive, J drive, Computer or just the interior fixtures and fittings). The PCs will find out when they have to service that function of the ship for the first time. Normal off-the-shelf imperial standard parts just do not fit as they should. If the players are in or near the system of construction, this could not be a huge problem, they might not even notice as the parts suppliers my habitually ask a few questions and then know to supply the correct part, but the further away they are from that system, the more it becomes apparent and a problem. The players will find that they have to either scour scrapyards for suitable parts to get them refurbished, seek out specialist suppliers (this might introduce them to a classic starship owners scene) or in some way hand fit the part of jury rig a way of using new components when they need to be fitted.
There might be advantages to this non standard tech:
Computers: the computer system being non-standard might be harder to hack, but also harder to program for (but might have an emulator built in to handle imperial standard software). The original software might still be in storage. (Real life analogy: Your ships computer is an Amiga, not a PC or Apple, so no one writes viruses for them anymore, or much in the way of any software). But you might be vulnerable to older viruses that could be infect your system when you load a compromised piece of older software.
The older technology, in its original configuration might be more durable (more time between services) or slightly more efficient (saving of up to 5% on power/fuel requirements). This should be just enough to give a slight boost to performance, but standardizing with the rest of the imperium was seen as more worthwhile. If it was significantly more efficient/durable, the imperium might have leapt on that piece of tech and adopted it. Of course, they could be thirstier, suck more power etc. to the same degree.
- we have aliens…
2) There is graffiti somewhere on or in the ship something is not visible to the naked human eye, but very visible to hivers (or insert other aliens here) that they find offensive.
3) There is a smell aboard ship that some aliens find offensive. Humans however do not notice this at all.
4) Dead/mummified hiver larve keep turning up when you open service panels.
- Tastes vary, gifts from previous owners…
5) You don’t know who did the decorations and upholstery, but you have yet to find anyone who considers it tasteful, or even bland.
6) All the swing/slide doors swing or slide the other way to what the PCs are used to.
7) No matter how much you scrub and clean, there is a lingering smell of sweet popcorn in the common area.
8) Sensors displays give non-standard names to objects that appear on it. Sensor blips are marked wierdo, Klingon or some such.
9) the ships intercom has a really annoying ring tone, it seems hard wired.