Ahoy, Captains!
I had an idea for another use for the ship's brig! A safe that crews can store their booty. So here's how I would imagine it working. The crew all have their own key, accessed from their inventory, that can be used to open the brig (except prisoners and other crew). In order for another crew to open the brig, they must play a mini-game to pick the lock. If your ship sinks while your booty is locked in the brig, it goes down with the ship. This makes ship boarding and not sinking your opponent more of a necessity, if their booty, is all you're after.
Yar!
