If to watch life like the cellular life I’m agreed with hyyrylainen (i wrote this right at first time without watching nickname! Yoho). But! If the non cellular life is possible (life on clear electricity) without any intermediaries (like ATP/glucose /other sugar), in space could appear something like void cloud frim stellaris. Of course, it cannot be used like bioship, but it is ALIVE! Giant clouds of different elements, ions to create lightnings (for communication, for example)… They can have many different interesting things, which can be discussed in other threads.
About bioships… Alone known and well working method of exiting atmosphere and with this flying in space - Jet propulsion) or simply reactive movement… Translator can tell wrong things). For it are needed Oxidizer and fuel. But no one known creature can survive at temperatures, which are in nozzle of rocket, when it goes up. Ok… Where will it store all the reagents? Right, nowhere. Most part of time it will be useless, sooo… We so go to third main problem - how did they get everything this. As it was written a lot of times by all-knowing Hyyrylainen, how did it evolve? Problems are solvable, but solvings are useless before result. If something is useless, it dissappear. Rules are simple.
About biomechanical ships. What for did somebody need them? Mechanic parts should be expensive, every needed creature need individual pearts.
And for what? For ships, which we can do a lot by similar price. Bio parts need food, when usual ships don’t.
So, there are no any reasons to do biomech space ship.
I think, question is closed.
If you have any suggestions, we are open to discuss
Edit: As alway, sorry for my English, but thoughts should be clear