Steam engine/Helm

Does anyone have stats for anything that resembles an early steam engine
adjusted for spelljamming? I'm putting together a steam tech / high magic
sphere and any help I could get with this would be appreciated.

If there isn't any one have any suggestions on how to go about designing
one? How would one deal with the waste generated by burning coal? That sort
of thing would foul an atmosphere in no time. How to convert mechanical
energy into spelljamming energy or is all energy magical in nature? What
happens when the helm gets hit, boiler explosion? I imagine manning the
help would consist of a wheel to control side to side movements and a
series of levers to control the other axis's. Any ideas?

---
  Ignorant people fear technology.
  Brave people hide behind it.
  Clever people have technology and hide it.
---