This one unit washes and dries:
Washer Dryer 2.jpg
However, it can use more water to dry than wash, as it heats the unit to create condensation and then washes it overboard. They make a vented model that is better, if you are able to figure out how to vent. Drying doesn't work well on this one, takes a ton of 110v power and water. If one can, its best to wash, spin well and hang dry. We use ours while cruising, but try to limit ourselves to quick dry synthetics. Cotton towels and sheets are nearly futile and we just wait to get to a marina for those and bring spares.