re: #83 Varek Raith

He could only do that on a Galaxy class.
:P

re: #89 Bubblehead II

The original class? This should be interesting.

re: #92 Targetpractice

Falls under “Word of God,” i.e. the people running the show say its so, so it is so.

Except for Gene. If Gene said it, then you want at least two forms of verification, else it’s considered noncanon.

Quoth Memory Alpha:

The Constitution-class was capable of a similar emergency maneuver when trapped in orbit. By discarding the nacelles, the ship was better able to rocket back into space under impulse power.

In 2267, Captain James T. Kirk considered a plan wherein chief engineer Montgomery Scott would discard the warp drive nacelles and escape with the main section when the original USS Enterprise was threatened by Vaal at Gamma Trianguli VI. Ultimately, the separation was never ordered. (TOS: “The Apple”)

Kirk attempted to order Scott to disengage nacelles, and jettison if possible, in 2269, while the ship was in orbit of Excalbia, but the transmission was cut-off before the order was received. (TOS: “The Savage Curtain”)