I was surprised when Bill confirmed that waste is diposed of in the 'old fashioned' way.
I really thought that in the 21 st century the Seawolf for example would chemicaly convert the waste.
Appart from bio considerations there is a possible risk of detection element here. My guess is that it is treated in ways that
render its traces in the ocean undetectable.
Still think for security, operational flexibility and bio reasons that a kind of 'drop tank' system would be effective.
Off topic - Pity airliners cant find a safer way to deal with frozen urine - many cases of shattered roofs - not very nice
