80% for Escort,
70% for Cruiser
Dunno for Sci. I think same as cruiser.

^this is assuming 9 in Maneuvres Spec, Elusive trait (+10%), and no external abilities like Omega, Subspacemod, Evasives, etc.

I reach 83.8% on my Escort. I believe 51/25 engine power with Omega engine.