[ Her comment earned Daisy a bit of a bemused look. ]

That depends upon what you're doing every day on this ship. If you're running yourself into walls or otherwise physically abusing your body then yes. If you're just shipboard it shouldn't be an issue.

[ As he talks he digs around in a cabinet and surfaces with a sling. It's a simple thing, which he shakes out of the protective bag. ]

You can also target exercises designed to strengthen the muscles of the shoulder. That's what I do for myself.