Wow, this is really heavy.

So on the surface it's obviously a dream about being trapped in this marraige. You're trapped, along with all the different aspects of you, and all that remains is the victim part of yourself (which, by the way, is there not because of this relationship, but becasue of your past...just fyi). The master and his crew are the perceptions of all the ways he and the world has trapped you and your child in the household. Even with him gone, the expectations the world places on you still force you into their will.

But wait, there's more. Dreams are more about you than just your reaction to the world. We start with the same premise - your victim self, and this master self. The master could easily be the pent up aggression...the wanting to fight back, but being bound not to (because this aggression is the same thing you attribute to the oppressors that overpowered you). So you start in this boat - a physical embodiment of your physical body - adrift on a sea (and a large body of water is the representation of your emotions). Your aggression has been fighting and fighting to get some sort of release - to be heard....

Oh, before I get too far, the aggression is a primal reaction, so between that and it beign connected to your past traumas, it only makes sense that the slave master would be male...a human version of your animus combined with the pivotal shadow self.

Okay, so your aggressive master has overrun the ship, taking a crew of lesser quirks along the way. (( Did the crew arrive after the slaves disappeared, or were they there beforehand? If they were there beforehand, they're negative self-images that have risen to the surface. If they weren't there until after, the slaves - the other aspects of your personality - were transformed and turned to negative traits through the aggressive character. )) So not you're running around, trying to find who you are on the inside. You've tried just letting this aggressive side have you, but that isn't what it wants. And every time you kill it, it's going to come back. Stronger. You need to find out what it is your aggressive side wants, and then find a healthy compromise.