Oneye I just ran it against a big gun only, compartmentalized broadsider, and it did a lot of damage to your ship.
BIP $1.4 million
Cigar $950K
First, I would not bother with small cannons, go with the big cannons. Your engines were taken out very quickly, leaving you unable to move. (BIP is the top ship, broken in half)
Remove the battery packs and place energy generators instead. Put the energy generators and ammo manufacture towards the center of the ship. Put the crew quarters between the guns and the ammo/energy generators.
