[META] Perceived Setting Assumption Contradiction

[Sirrocco]

Not to be forgetting improvised handwavium-based weaponry. You can build things that are not inherently weapons, but that can be used as weapons. It's a matter of primary intent and initial effect. An overpowered Structural Integrity Field can be used to carve through hulls pretty neatly if you tweak it right. If you can manage to tweak your gravity generator so that it generates at range, you can really mess up someone's navigation, and possibly burn out their drive. If you've managed to develop some Really Quite Powerful speakers, and can attach them to your enemy's hull through whatever method - well, sound should conduct pretty well through most hulls that aren't explicitly soundproofed, and using the entire interior of his ship as an oversized, overpowered woofer box is going to pretty seriously mess up his day. Things like that are completely doable.