Hussar
Legend
See, the problem there becomes scale. Battlesystem is too big for ship combat. Battlesystem is for hundreds of combatants.For bigger battles where each side has dozens of combatants or more, it might be time to break out the Battlesystem rules or something similar.
I've never found a decent system for what I call platoon level combat. Say 30 (ish) on a side. Which is typically what you're going to find on a D&D era ship. Base system is far too finicky for it and most mass combat systems are for army level combat where you have hundreds or even thousands of combatants. I've just never found anything really satisfying at the platoon level.
It's really frustrating to be honest. I think, maybe that switching to something like Savage Worlds, which does handle platoon level combat fairly well, might be the way to go. Or, maybe an entirely abstract system. Again, I just don't know.