Really interesting base for level design, I saw you were using ProBuilder in Unity thats a very cool tool to map out designs, the couple of assets also looked not too bad :=)
I would recommend maybe to cut down the level design to purposeful areas. When we think of a real ship we also have different areas with their purpose - Kitchen; Engine Room; Navigation Room - this translates also into games always find a small reason why you put stuff here.
Maybe then you could have elaborated on the dialogue system a bit.
I am not sure but the captain was talking about doing some maintenace on the ship right?
Anyway cool entry and I think you can post jam still get something interesting going here.