Boarding actions conducted via motorbike.
"Don't we have jetbikes?"
"Yeah, but these are more fun."
We have to. The sea is a bitch and shipboard coheasion/discipline is important. Social Darwinism of "Only The Fittest Matter" is suicide.
Hm. Now that you bring it up... that's probably going to be a point of serious contention for both of them even if we ignore the moral grounds.
For the clans of Medusa, every individual must be as strong as they can be, for to be weak is to bring your brothers down with you. There isn't time for things like pity or sentiment. In such an environment, outside of your immediate clan/family, there's no real reason to get attached or build social groups. Sentiment isn't useful for survival and so it gets tossed aside. This leads to a cold and distant people, but also a very pragmatic one.
For a ship on the seas of Tabgach, what the captain says goes, and you're going to be seeing the same faces and names in a very small area for days, weeks, even months at a time with next to zero privacy or secrecy. It's a much more top-down system, and it pretty much guarantees that everyone on the ship is going to get attached and/or REALLY friggen hate each other. EVERYTHING is personal, EVERYTHING is going to involve emotional ties of one kind or another, that's just what happens when you spend months in a small space with someone. Even moreso in a pirate crew.
On Medusa, letting the weak die is not only okay, it's the mandatory choice. On Tabgach, letting your crewmate die because he moves a bit slower than you is likely to get you keelhauled if not outright shot.
That'll be an interesting push and pull...