Oh, I was being facetious.
Those missiles were pretty useless; though it did scare off a couple of Nausicans, but that's about it. I missed the episode in which they surprised an Klingon attacker with a newfangled photonic torpedo... by blowing him up.
Although, you could mount all sorts of nasties on the tips of those missiles, I imagine...
But I wonder, if this is a long term deep space mission, they've got to turn back to Jupiter to get more torpedoes and stuff?