everything that can fire more than one supernova is more or less too powerful. - hitting a capital ship with a supernova requires little to no skill and no punishment when you miss ( no ammo ).
so while the supernova is both - ammoless AND so powerful, i am not in favour of more than one SN on a single ship. - however, its possible to make a torpedo ship. - take a battlecruiser, add 4 - 5 light mortars. - those have torpedo looks and so - well, less damage than a SN, but more than enough. - if you know about the effect of 4 light mortars hitting pretty much any warship, you know what such a damage potential can do.
![[Image: just_a_signature_by_sjrarj-d63yjsx.png]](https://img00.deviantart.net/ca73/i/2013/123/e/a/just_a_signature_by_sjrarj-d63yjsx.png)