Two Ideas

[crimecities]

While both of these ideas won't work in Discovery, I'm assuming this thread is about the technical aspects of it.

Jump field MIGHT be doable through FLhook. Basically you would have to dump the player into a predetermined point in space, which I'm not sure is doable.
However, you could modify the .beam command (admin command that teleports players to bases) to allows players to teleport themselves to specified bases.
EDIT: Ninja'd on this.

As for the EMP bomb, that might work by draining energy, similar to cruise drain. If you drain a ship's engines completely, they can't cruise either. (Which is why cruise drain leaves you with a sliver of energy) Programming the area-of-effect will be tough, but it has been done before (See: Admin .killall command). Having it target a specific ship is definitely doable. Alternatively, make a pulse-based missle with a massive blast radius, and using that to take out shields/energy.