i came up with this one well posting in the carrier thread.
it would be combat engines or impulse engines or maneuvering engines.
they would only be used in combat it would take like 1 engine for normal combat moves for a tiny ship. i don't know say a -10 to the enemy attack. the bigger the ship the more of the engines you would need.
of course with research this could be up graded.
posting here to get some feed back from everyone and the devs.