So you load up your launchers with some corrosion torpedos and fire them. The torpedos spread out and begin concentration all their beam weapons at assigned shield points and collide with the hull. Upon impact, a canister containing an as-of-yet-undetermined substance or energy opens and releases the substance/energy onto the hull, eating away at it and killing the crew by overloading the ship's ability to erect emergency forcefields.

Since standard sensors can determine the hull's makeup, that's not the important part...it's what's inside that is.

So, any ideas/comments? What could the canister contain, an AQS or protomatter? What about anti-matter?

If you really wanted to have fun, I wonder if it would be possible to manuver close to the enemy ship and go to warp with a large than normal warp bubble, shearing half of the enemy ship away. How do shields and warp bubbles interact anyways?