Castor can have a history with it too if you want him to, KS - whether or not it was during the same time period as Derek. (That is, Castor can have a previous relationship with Derek, the ship, or Derek and the ship - Tailspinner and Kobold Stew can let me know what they prefer on that score.)
I'm happy for Castor to have been serving aboard the ship for a while -- it'll be important for him to know where things are and not have to get comfortable in a new space. I'm open to any former connection to Derek Tailspinner proposes.
Character loaded in RG.