While talking about small numbers of hard men on large boats, it is important not to be taken as talking about that wide world; I do not establish some correspondence, I reject Plato's manuvers--the making large of the small, the whole putting-things-in-caves bit. I don't want any thinking about 'oh, things happen on this boat like they do in the world'. No. Things in the world. Happen. Like they do on the boat.
People like to have sex. If you bring together a bunch of people together, in the absence of people they'd perhaps rather ordinarily be sexing up, sex is still going to be happening. But not on the Carpet-Bag! And not because of any authorial squeamishness, either...believe me, I got pig-friggin' reams of slash about Sayonara and Trelawney, and I'm looking for a likely-enough slot in the structure to feature same; it's just that aboard ship, the circumspect and shy aspects of their personalities wax. About the closest they come is a Wide berth around the bathrooms and the sack time, in order to offer masturbation with both maximum discretion and plausible deniability. On both sides.
You get, right, that there's no running water aboard the Spouter-Inn? Such bathing as happens involves the clean ashes of a dung fire, but in the main it's just two unyoung men well-adapted to the grime regime and its requirements. Contributes to a not-unpleasing bandity sort of a look, and an absolute rebuke to those childhood photos featuring sweater-vests.