@jjjj , there were salt water taps all over the ship. This was a WWII-vintage aircraft carrier. It took 400 gallons of fresh water every time a plane was launched. The ship's watermakers were ancient and couldn't keep up with demand. So, within a week of leaving port in the far Pacific, we'd be on saltwater routine. Saltwater for showering, saltwater for laundry, saltwater in the sinks in the "head." I don't remember the taps having special markings, but maybe they did. We normally stayed at sea for 30+ days. There's nothing like pulling on a pair of dungarees, recently laundered in saltwater. Saltwater was not required, however, for making coffee. That was my own innovation. Another "nicety" -- fresh water and jet fuel were stored in the same voids (tanks). Fresh water was drawn from the bottom, and jet fuel from the top. As the fresh water began to run out, the drinking water started tasting like kerosene.
For several years I pulled a 6-10 AM on-air shift at stations in Madison and later in Cedar Rapids. When I was named Program Director, I switched to a 10-2 shift. , When our Chief Engineer left for a station in Des Moines, and I had to assume his duties, I stopped on-air work entirely. It wasn't long before I left broadcasting to make a natural transition to District Service Rep for a crane manufacturer.