Been shopping around for sail boats here in Calif. One guy has one at a
great price, but it was built in 1970 and "doesn't have a holding tank."
Does that mean that your crap flushes straight into the ocean? Is that even
legal? Can a holding tank be fitted easily or would that be super
expensive? I plan on leaving the thing at anchorage and on moorings, not in
a marina. But I don't want to be arrested when big turds bob to the surface
around my boat (I inhale a lot when I eat). Do anchorages require holding
tanks?

I must admit I know next to nothing about marine sanitation.

Thanks!