As its description implies, it is a simple-looking blue cap for the 'captain of the seas'.
Overall, the Captain's Cap is simply a garment that players can use for vanity and in spite of being used for vanity, it does not have a relevant purpose in-game.
- The Captain's Cap is not to be confused with the Collector's Cap or the Rich Man's Cap, caps that are nearly identical to the Captain's Cap itself. These caps were introduced during the 1.10 (Fishing) Update.
- From the release of Fantastic Frontier to the 1.10 (Fishing) Update, the Captain's Cap is currently the only cap-based garment sold by Luhr, the other garments being angler's hats.
- The Captain's Cap is the cheapest cap to be sold as of the 1.10 (Fishing) Update.