So when I was in the Canadian Navy, we were taught to take "Hollywood" showers, I believe others call it a Navy show. Water on, wet down, water off, lather up, water on, wash down. The obvious reason to reduce wasted water down the drain.
I am often surprised at how large some of the fresh water holding tanks are on some of the larger boats out there. I try and think of how so much water can be used in one day. So heads flushing must be a big one (fresh water flush), dishwasher (?), showers and I'm sure some tasks I have not thought of.
But do folks take Hollywood showers (Navy) on their boats in this day and age?