He is, yes. At the time the game is set, the concept of passenger ships as we know them today didn't really exist. So, just like he did, if you needed to go somewhere, you just kind of booked yourself on whatever cargo ship would get you there and hope for the best. No scheduled departure or neat desctinations ro pick or anything of that sort.
So yeh, he's the only passenger, and typically doesn't eat with the lower rungs of the crew. Though there are moments where he might due to some circumstance, such as in a section of the upcoming update.