Swamped

It looks like the hat the wizard was wearing, which now that you think about it, looked like that Resk guy's hat. But there's an emblem on this one that looks a bit like a flag.

Your first thought is, why didn't Resk's hat have an emblem like this? It's easy to answer that with a little thinking, though - the medic said they were looking for a trade route. So they were probably a merchant vessel, or maybe just a ship for hire. No formal military affiliation, either way.

This hat is probably issued by an actual navy. You don't recognize the emblem, though, so you've got no idea which country's navy it is. Hells, it could be Burgundy's hat for all you know - it's not like you know any details of his military career before the Bogknights.

But that's a minor point of curiosity, at least for the moment. What's really caught your attention about it is the glaringly apparent reason why it needs cleaning.