
Glad you guys are interested in this but lets stay focused on the topic.
We are talking about using a measured amount of ammonia to interact with (wash) organics (bacteria, virus, amino acids) out of clothing. After the ammonia has interacted chemically with the organics (something to do with all those nice extra hydrogen atoms) the ammonia is not 'pure ammonia' any longer and doesn't have the 'strength' to react with the organics in the water the boat is floating in. If you try to use the first wash water to do a second load the clothes don't come clean because the ammonia isn't there like it was in the first load (trust me on this practical effect, I tried it). Therefore it appears to me to be a safe way to wash moderately dirty clothes and save rinsing, i.e. water,at the same time.
Thanks for playing, it's been fun!