For days off and spells of freedom, there's the Vintage Nylon Trunk. It's a non-stretch swim trunk with a slightly longer outseam that lands at the top of the knee. Durable and slightly structured, and has been treated with DWR coating so they're ultra-quick to dry. Finished with a drawcord closure and fixed waistband.
Fixed waistband with a drawcord closure
Clean finished seams
Rubber patch at left leg
Water-repelling DWR coating