I think a 'torpedo' in space wargame terms is just a very fast seeker that doesn't stay around long enough to need representation on the combat grid like slower seekers. I suppose that some types of torpedos ought to be able to target smaller vehicles like fighters and satellites, but some should not. This would depend not only on the tracking technology it used but also the warhead. Some torpedos might be designed as "proximity" weapons as some have suggested, while others might be armor piercing and require a large, hard target to detonate properly. Unfortunately, there's not much variation in damage types available in SE right now. You've got 'normal' damage, the TDB "Quad damage to Shields" that also does normal damage, shields only, and a few "special" damage types that hit only one particular sort of component. There's not a lot of variety in types of "regular" damage. So, I guess you have to 'wing it' and just give certain torpedos the ability to hit smaller vehicles with a made-up technical explanation.
[This message has been edited by Baron Munchausen (edited 08 January 2001).]