Here's the situation.
There is a veritable armada of orc pirates, we have made a few "standard" warships, but the PCs need an awesome Flagship.
Here's what we've got so far. We found an overrun by spiders mithril mine, and cleared it out, so we're reinforcing the entire ship with mithril (I have max ranks in smithing, so I'm making it work).
We have enchanted it up with resist cold and fire. As well as just a simple +1 on the siege engines and armor. I made a few Fan tokens in case the winds are working against us.
Ship is built, and we have ~25k left to spend, I have craft wondrous and arms/armor. so we can get some discounts. I'm new to ship combat, and not entirely sure what other things would be useful, Adamantine ram? (assuming I can find the adamantium) Sundering? (no idea how or if that would do anything)
I'm not really up on the ship combat rules, and the srd is kind of ... lacking. What other good tricks can players pull off?