Wow that's a lot going on.
Kat is willing to help with Jade's BB if you need her, seeing as how her cannon is, for the moment, mastered.
For the plunder party I'm not using Kat. With both her Cannon and Sail maxed, and quests going that require ships, I'd rather wait till the new stuff hits open and get the credit for what I'm sinking in rep. A single BB is one thing but a plunder party is a whole nother story.
Also, since more people tend to show up to guild night than can do a BB Kat volunteers to launch her war galleon for whoever wants to get the plunder party going. If Kat isn't needed for the BB herself she'll launch and I'll captain with one of my smaller pirates.