UK4x4, I really like the newer models like that one, the issue is at my age, they think I can't operate them satisfactorily and with the old models, I'd prefer them to simply wear the dirty clothes in the river!
Otherwise, here's one that has good reviews:
http://www.livethegreatescape.com/sailing-electricity-and-a-hand-crank-washing-maching
No relation of any kind with the product or retailer.
There may be others but for the price I'll get it any try it before I take off.
When I just go camping I don't wash anything, it all comes back home (or gets thrown away). I have used laundries, hate it, time loading, going there, waiting on a machine, avoiding the washer used by mommy doing diapers or the dog's bedding. Many are just nasty. Doesn't take too many trips to the laundry to pay for one of these gizmos. There are others too.
UK4x4, is it possible to rent your model along the way? A phone number would help and I'd be grateful for any introduction as well.