In my experience so far, neither chain-shot nor fire shot appear to have related effects on skeleton ships (masts can't fall, hull can't catch fite). Can someone confirm? -Mmwhatchusay
Let's see...
1. Chain-shot still can create small holes in the ship, but has no affect on sails / captstain / wheel.
2. Firebombs / Burning Wraiths can still ignite the hull in the same ways as any other ship (barring the mast, which can't be ignighted), however, they do self-extinguish after a "period of time" (I'd say... ~1-2 minutes?) before being able to create holes.
3. Anchor balls & Rigging Balls both bring skeleton ships to a temprary stop for the duration of their "lockdown" effect. While Helm balls lock their ability to turn for the lockdown duration.
-SorrowSan