The torp shows up in the encyclopedia along with its stats, it's available to purchase from any given equipment dock or shipyard, and it costs what I intended for it to cost and uses the materials I intended for it to use.
So I was pretty proud of myself at that point, but then I buy myself a few and lo and behold, when they are fired rather than impacting the target, they simply disappear

I'm super new to github but i set up this impromptu repository in case anyone prefers to review the files that way.
https://github.com/fergrim/fergrim
generically named 'my mod'.
I've been at this for over 12 hours now and I no longer need to figure it out for myself, I'd just give anything for someone to show me where I've gone wrong.
Thanks so much,
Fergrim