1) Take all the dirty things onto the prow of the boat.
2) Fill a bucket with Nile water.
3) Pour a little water from the bucket into a dirty bowl (from the washing up pile) and add some washing up liquid.
4) Wash items in the bowl, using the scrubbing brush.
5) Rinse items in the bucket.
6) Lay items out on the prow of the boat to dry.
7) Use remaining water to clean and rinse the area where the washing up has been done.
8) Tie bucket back to the boat again.