Sorry for the delay, work happened back full swing and its super busy!
Forward berth is clean, tea tree oil, much clorx wipes, simple green, vinegar, you name it. Its clean.
Discoveries: The water fill hose is just laying beside the water tank. The fill hole on the tank is capped off, but I can't figure out why. The fill hose is nasty, and needs replaced, but that seems like major deconstruction of the v-berth to get under the chain locker.
The tank is mostly clean. The water feed doesn't leak. The foot pumps leak much, but I got water to come out of the sink!
The shower pump is broken.
There is a seacock under the sink which is just plugged, connected to nothing.
The seacock which drains the sink seems to have a tiny leak at the valve - its plastic. It also has a T fitting that goes somewhere, which I believe is the sink in the head.
Removed the holding tank, will install composting toilet. Large gate valves/through hull still exist, but are 40 year old plastic so I didn't touch.
Forced all the cockpit drains open (full of leaves), and they drain now. Good!
So I have a few things to replace plumbing wise, and still need to sort electrics. Its at the point now where I'm not sure where the end is, or if I will ever finish!